I honestly don't know why people even run Nolva for PCT anymore. If you've never ran tren, have some Cabergoline on hand .5mg 2x a week should be fine. Tren A for 12 weeks might be a bit rough too, I'd cut it at 10 max, 8 if it's your first time. Why are you using Masteron? Is this a contest prep cycle or are you trying to bulk? What are your goals and prior experience?