How far do you take unpaired AKo?

[btspider]

raising the flop gives you no protection from reverse domination. the free card won't happen if he 3-bets you or someone pulls a stop-n-go.

you have excellent relative position, so make use of it. you will have an incredibly easy fold on the turn if its 2 bets to you. if a J or something comes on the turn, BB may not even bet and you may get your free card literally for free.