Test and Primo is a fantastic combination for your goal of a lean, bigger body. However, since this is only your second cycle, I would strongly advise dropping the Sustanon and just running Test E again. Sustanon has short esters in the blend, meaning you need to pin it every other day for stable blood levels. Test E is much easier to manage. Regarding the Primo, be very careful. Primobolan is arguably the most faked compound on the UGL market (often swapped for cheap Masteron). If you are going to run it, your source needs to be bulletproof. I strictly use P h a r m - 8 9 9 for my Primo because I need absolute certainty that I am actually getting real Primobolan and not just expensive Mast. Keep your Test to Primo ratio around 2:1 and you will see great, dry results.

What was your test dose last cycle? Without your own personal experience using differnent compounds you wont know what a perfect cycle for you is and when you get older that perfect cycle will more than likely be something different. Id look more in depth with what's going to help you the most now. If you made good progress with the test cycle then just repeat that but if you're itching to expand then id suggest the more benign compounds to add with test. If money is no issue then primo for sure but if you want to stretch the doses, youll get more bang for your buck with test and mast or test and eq. Mast i run 1:1 with test, test/eq for me is 2.5-3:1

If you choose eq then definitely get ultra sensiitive e2 bloods drawn at 6-8 weeks to assess your e2 because crashed estrogen is a bitch and you'll shed hair

Im not a fan of sust unless someone is wanting to pin 1x week on trt. But again nothing wrong with a higher test and Ai cycle. Ego aside 99% of us dont need multiple compounds in the mix to achieve a above average body. You're 28 so keep hcg and clomid on deck for the return to cruise to keep the boys functioning

If you have only done test I’m assuming it was either cyp or enth you’re not sure how your body will aromatize with different esters I would suggest sticking to sust only and see where your e2 lands after you take bloods at 6 weeks if your e2 is high you could implement primo at a 2:1 ratio test to primo to manage your e2

Only you can answer this question of the “perfect cycle” by experimenting with new compounds and doses over time.

From someone that is relatively new to the community I would recommend focusing on labs before trying anything. During small research like looking up the compound it self and assessing risk to reward ratio is a must. Started off with true TRT at 140mg a week then jumping to 250 helped me realized that blood work will always be a key factor in making your decision. Wouldn’t pin or taking any orals without knowing certain markers. Once you get that in check only recommend start with the smallest most effective dose. Research if the compound you plan on taking can correlate with each other. If not you will tank cholesterol, damage your liver, spike or crash E2, and thicken your blood. You will be forced to cut your cycle short and end of with headaches with going back and forth from hospital.

There’s a lot of good resources in the forums. Encourage you to take time and research. It would be difficult to recommend a cycle without knowing your labs and there’s great information here about that too. Good luck.