I would actually be more concerned with the BTN overcalling. What's his Wtsd/W$sd?
Also SB could be squeezing here, I would 5bet small. AP good call ott given pot odds.
This.
Button has decent stats, maybe low sample though.
With what will he call preflop? Maybe a lot of pocket pairs, Ax, some other boardway suited combi's.
I should be happy on the Flop with AK after SB bets, but i am not so thrilled.
I think there is something to say to 4B and getting position on the Flop. Sure SB is a NIT, but we have AK, wich works well vs his 3B range + having position i think.