Is this a good time or a bad time?

[Piiop]

Party 15. 9-handed. I join and post in the CO, game looks to be pretty good. The VPIPs of the players on my right are 50, 30, 37, 30.

Surprisingly, everyone folds to me and I raise AKo, the TAG button (18/11/1.7 after 1500)3-bets, SB folds, unknown BB calls, I capsicle, both call.

Flop: 8 6 4 rainbow

Check, I bet, call, call.

Turn: A completing the rainbow

bb checks, I check planning on raising

My reasoning: TAG should be 3-betting a lot of hands preflop here since I posted. Flop comes all low cards and he didn't raise so I don't think he has a pair. Turn is A, I check representing a big pair thats afraid of the ace. There's a very good chance the A hit him.

If he doesn't bet, I risk a free card to him and the BB but at the same time he could pair his KQ or QJs or something and call on the river where he wouldn'tve called before.