Am I tied to this pot?

Live NL 100
Hero stack is about 50

Hero gets AKo in BB

5 limpers - BB raises to 9$ total (8 more) and 4 callers

Pot ~ 40 Hero's stack ~ 40

Flop:
K [img]/images/graemlins/heart.gif[/img] Q [img]/images/graemlins/heart.gif[/img] 10 [img]/images/graemlins/club.gif[/img]

Hero...?

I bet 25 (~2/3 pot) and more than 1/2 my stack. Should I have just pushed? Lots of scary draws on board and I don't want to see turn but against 4 other villians do I expect to be beaten enough by say : 2pr, set (10s is only possible I can imagine) or flopped straight?