I think Cyp is fine, I'd like to try some myself one day since I always use enanth...maybe hop on some adex or low-dose letro to kill that bloat. But bro, be reallllly careful with that deca/tren combo. I remember when I ran my deca into an overlap with my tren a/test cycle around week 8 and shit did I have quick gyno onset and a concurrent destruction of my sex drive. Dostinex is almost a necessity with that sort of cycle, but personally I would run it like this if you're going for strictly lean mass:
Week 1-12 750 mgs pw Test Cyp
Week 1-8 400mg Deca
Week 9-14 Tren Ace 400mg pw
HCG 250iu, twice pw
Adex 0.5mg, Dostinex 0.5mg E4D
The test is going to be active in your system at least another 2 weeks after last jab, so running the tren a week beyond is usually what I would do. Separating the tren and deca into different segments of the cycle should at least minimize the prolactin-related issues and let the dostinex do it's job, not to mention you can begin to drop the deca water and really see the tren work its magic for the last 7 weeks. Good luck dude