Even though the Mast has a Propionate ester, it doesn't act that fast. Yesterday was my first dose. I'm pretty sure my experience with the Tren the last few days was more anxiety related than actual compound doing anything right away. And I credit the euphoria more toward 5 weeks of supra physiological Test levels, mixed with caffeine and Conqu3r.
As for you using the Mast in that fashion, I still think you're looking for another anabolic to do the work of a proper AI, instead of a proper AI. If you add it, fine, but don't let it fool you into thinking you don't need to still get a legit AI for the Trest.