There is a chance that caber might help, if you begin having issues with progesterone. Many guys never need it, but there are is a smaller %, say 3 out of 10 guys I run into, that feel much better while using caber. A standard dose would be around .5mg 2x wk. As long as you have your estrogen under control with the adex, most people shouldn't have issues from prolactin or progesterone, but it doesn't hurt to have it ready.
Thats another reason that Ace is a good option for your first tren run. If things get out of control, you can always skip some shots and get some relief