Iv'e ran HCG 2 weeks prior end of cycle, just to get the testies generating, that way you don't have a pause in levels. that cycle is way huge bro. take it down a notch. I'm a multi time user of tren, mast, and Var. it's my favorite of all! I'm gonna run it in 2 weeks myself. as far as a progesterone blocker, I like to have it on hand just in case. if I use more than 200mg/wk of tren I show signs of oozzie ness . keep the questions coming don't be afraid to ask! it's how you learn. take care, train hard.