DNP and Tren could be something to be concerned about. I think initally its not a problem as the tren e wont kick in til around week 2-4 (depends on the person, hits me in 3). Like pretty much everything, DNP sweats are dose dependent. 250mg a day of dnp is very mild, I dont sweat much/at all on 250mg. I dont see any real serious danger combining the two, I just see a possible annoyance, lack of sleep and sweats from hell. I dont know how I feel about DNP during week 19, I foresee possible muscle loss during that week.

He might wanna raise his test a little and play with it. I personally love low test, high tren because it gives me more of a tren look (dry, vascular, lean/mean..etc) which is what I like (love high test but it makes me 'thick'). However I would raise the test for boner purposes. He can try 250mg and that very well might work for him but personally Id close the gap alittle and raise my test to 400mg and keep tren around 600mg. I like a 2 to 3 ratio, test to tren.

Have fun with the DNP, I'm on 750mg right now and dropping weight very fast.
I wouldnt do keto while on DNP. I would suggest a 2-3 day carb depletion prior to DNP though so it can get to doing its magic and not waste time burning glycogen stores. And while DNP is said to not be catabolic (who knows to what extent) we do know that a cal deficit is catabolic which is why I run AAS while cutting. Oh and dont expect to make any gains while on DNP. It just wont really happen.

Hope your boy has got an AI on hand and something to manage prolactin, preferably pharma caber.