I would start taking adex at .5mg EOD, from the begining of the cycle. If you find that is too much, you can always reduce it later. to say .25mg EOD. Along with this, you may also want to use caber at .5mg 2x wk, for sides related to tren. You may not need this at all. Many guys don't but it doesn't hurt to have it on hand.
For PCT, about 3 days after your last shot, Clomid 100mg ED for 1 wk, then Clomid 50mg ED for 2 more wks.