Bro, I am contemplating the same exact compound/dose for my very first cycle after 14 years of natural training at the age of 31. I think based on your stats you would yield awesome results. Less is more on a first cycle. As far as AI goes, just have one on hand. We have simlar stats too, man. I'm 5'8" 173 lbs, 12 percent BF. Oh yeah, don't let people try to persuade you into doing a heavier dose. 300 mg is way beyond what a man can make naturally.