Haha I sent you a pm before I read this. You wait around 3 weeks after your last test pin before starting around 4 weeks of PCT. You are then supposed to wait 12 weeks or whatever your cycle length was before starting again. It'll be difficult but for longevity you really should try.

I think that unless you go stupid with calories you will gain lean muscle and probably lose fat. If you just want huge then eat more and gain some fat as well and sort out the fat gain later. My personal choice is to lean gain and control any fat gain but that's just the way my body works. You'll have 12 weeks to work out what calorie intake works best for you.