Not going to relitigate your doses since you've thought it through and you're brainstorming, but one substitution worth considering that addresses a problem before it starts rather than after.
Consider running masteron instead of (or alongside reducing) the primo, specifically for prolactin management on this NPP-based cycle.
Your prolactin plan is caber 0.25mg as needed. That works, but here's the case for handling it upstream with mast instead:
Masteron has anti-progestogenic / anti-estrogenic activity at the receptor level. On a 19-nor cycle (your NPP plus the deca for joints), the progestogenic activity from the nandrolones is what drives the prolactin/progesterone gyno pathway. Mast competes against that progestogenic activity directly, which means it provides some built-in protection against the exact mechanism you're planning to manage with caber. It's one of the real reasons mast gets stacked into 19-nor cycles beyond the cosmetic hardening it blunts the progestogenic sides at the source.
Primo (methenolone) doesn't have this anti-progestogenic property. It's a fine compound mild, well-tolerated, good for lean tissue but it's not doing anything for your prolactin/progesterone situation. So on a cycle where NPP plus deca are your progestogenic load, mast is arguably the more synergistic choice than primo because it actively works against the side you're otherwise planning to chase with caber.
Why this matters the caber concern:
Cabergoline isn't a free lunch. The documented cardiac risk with caber is primarily valvular fibrosis it activates 5-HT2B serotonin receptors on heart valves, which can drive fibrotic thickening and valve regurgitation. This is well-established from the Parkinson's literature, where caber at higher chronic doses caused valvulopathy serious enough to change how it's prescribed. Bodybuilding doses are lower than Parkinson's doses, but you're talking about using it across a 16-week cycle and presumably future cycles, and the cumulative valvular exposure is a real consideration, not a theoretical one.
So the logic is: if mast can reduce or eliminate your need for caber by managing the progestogenic load at the receptor level, you avoid exposing your heart valves to a drug with a documented fibrotic risk. That's addressing the problem upstream (prevent the prolactin issue) versus downstream (treat it with a drug that has its own cardiac cost).
The practical version:
You could swap primo for mast at a similar dose, or run mast in place of primo specifically during the NPP-heavy portion. Mast at 300-400mg/week gives you the anti-progestogenic benefit plus the hardening/lean-tissue effects, while reducing your reliance on caber. You'd keep caber on hand as a backup in case prolactin symptoms still break through, but you'd likely need it far less, or not at all, if the mast is managing the progestogenic activity.
Two caveats on the mast swap:

Hair mast is DHT-derived and more aggressive on hair loss than primo for genetically susceptible guys. You mentioned brainstorming, so worth weighing if hair retention is a priority. Primo is gentler on the hairline. If hair matters to you, that's the tradeoff against mast's prolactin benefit.
Mast's anti-progestogenic effect is partial, not absolute it competes at the receptor but doesn't fully block the pathway, so on a heavy NPP + deca progestogenic load you might still need a little caber as backup. It reduces your caber need, it doesn't necessarily eliminate it entirely. But reducing chronic caber exposure is still a meaningful win for your heart valves.

One unrelated thing I'd flag on the layout:
The pulsed anadrol (50mg on weeks 1-2, 5-6, 9-10, 13-14, off the alternating weeks) is the same 2-on/2-off pattern we'd see elsewhere just be aware that anadrol is the most hepatotoxic oral (besides hardcore drugs like superdrol) and the 2-week-off windows don't fully let liver markers recover (cholestatic recovery runs longer than 2 weeks), so the pulses stack hepatic exposure across the 16 weeks rather than the off-weeks fully resetting it. Worth having GGT and full liver markers on your bloods given anadrol is running intermittently across the whole cycle. Not telling you to change it just flagging the monitoring.
But the main point: mast over primo for the prolactin angle is the upstream fix, and it spares your heart valves the caber exposure. The hair tradeoff is the thing to weigh against it. If hair isn't your priority, mast is arguably the more synergistic compound on a 19-nor cycle than primo, for exactly the reason you're trying to keep prolactin in range without leaning on caber.

I like this one. I'm looking at running the same thing in October but I'll probably start my test around 400 mg and titrate up. Same with primo and npp. However, I'm looking to run my Anadrol the last eight weeks due to liver toxicity . I assume your reasoning for two on two off is to give your liver a break?

Just begin the NPP at 400mg/wk mate and don't bother tapering it up.

I think this is overall fire, I need to know your primo source cause my pockets would run dry on that much primo. I love the Test, NPP and Primo mix. Mast is better in my opinion than primo, BUT primo is the healthiest additional compound you can take in terms of lipids, hair and cycle length. Good i love primo, its gold.

Only thing I would do is slighty titrate your test up with npp and primo. I feel like titrating 50-100mg every week for every compound till desired dose is always best, so first 4 weeks is titrating up, and remaining 12 is a full on push at proper doses. Lmk what you think, the drol is for you, I'm not advanced enough yet to touch that family.

Side note: forgot to mention, run every cholesterol supp you can and throw in some Ezetimbe, your lipids will come back beautiful even after this cycle. Just don't touch statins, I don't like em.

I was thinking about doing a similar cycle coming up in the winter, but I wanna maintain a lean bulk. In this I am gonna try out eq instead of primo, for obvious reasons, hopefully my blood doesn’t turn to syrup and my e2 drops to single digits. I have not played with eq yet so I’m unsure how i will respond to it.

400mg test
200mg eq
150mg npp
Tbol last 6-8 weeks
3iu GH

I was thinking about doing a similar cycle coming up in the winter, but I wanna maintain a lean bulk. In this I am gonna try out eq instead of primo, for obvious reasons, hopefully my blood doesn’t turn to syrup and my e2 drops to single digits. I have not played with eq yet so I’m unsure how i will respond to it.

400mg test
200mg eq
150mg npp
Tbol last 6-8 weeks.