AA in EP

[Nick C]

AK = 3 combos
KK = 3 combos
TT = 3 combos
88 = 3 combos
KT = 9 combos
AT = 3 combos
A8 = 3 combos

QJ = 16 combos

One thing to keep in mind is that when an obvious straight is possible (and you can't beat a straight), that is 16 combos right there, whereas some of the other hands you're hoping for instead will be cut into by the known cards.

I'd probably raise the river anyway, though. He'll 3-bet QJ, but he might've capped that on the turn if he had it. And if he has KT, maybe he'll 3-bet that too. (It doesn't sound like you suddenly become a huge underdog versus this opponent, when he 3-bets the river.) And if he just has JJ or something, there's a good chance he'll pay off a river raise with that.