Are you considering attending an IDEA event, Teresa? Because most of the CEC providers at events like IDEA World give CECs for both AFAA and ACE. Caveat: the last IDEA convention I attended was IDEA World 2012, so my info might be out of date. So if you’re just worried about CECs, you’ll probably be fine, except for that pesky AFAA requirement that you must take at least one course direct from AFAA.
ACE, NASM and PTA Global all have advanced courses that you can access with an ACE certification that aren’t available if you have AFAA.