You are correct in assuming that a SERM is not necessary. aPCT is an AI and will be more than enough to cover you after your cycle. As long as you run it within the recommended dosing and timeframe parameters, 3-AD's PCT is very easy OTC!!
I don't think that cycle support would quite cover things, though. There's a lot in there for cleansing and detox, but not much that I see at a glance for actual hormonal support. Though the shutdown that is associated with 3-AD is light if any at all, you'll still need a bit of something to kick-start the system again when you finish.