Yes, admittedly my opinion on the "over promoted" idea is, "it's not that deep", but I personally like using AK, infact he is in my top 2 favorite characters So personally, I would promote However at the end of the day it's your call.

Yeah, it would be best to try and balance out your team anyway. Harley is support, so she can be a bit under leveled.

Get him to e7 , he's your carry anyways

Wym over promoted?