You can certainly start HCG at wk 3 and run it all the way up to 3 days before PCT. If you like, you can run prop at the end, as you wait for the long esters to clear. If you do that, give yourself 3 or 4 days after your last shot of prop before you start PCT. Using a low dose of arom during PCT is fine. It probably won't make or break you, but it will help to keep your estrogen lower. i would just take 12.5mg EOD after the cycle is over