Big draw on the turn in big pot

[Mitke]

Dunno about preflop, cap or call.

On the turn, your c/r has been called in five places. I doubt you are ahead here nor will you be able to significantly improve your chances of winning the pot by betting (AT, AJ, A7 folding?).

Our bet or Btn's subsequent raise would have to be called by two of the four limpers for it to be of value to you (we improve 25% of the time to nut straight or flush). If you think the risk of Btn raising and folding two of the limpers is too big, then check and let Btn bet this for you. Free card isn't a catastrophe as you probably are behind currently.

You might consider even a c/r if Btn's bet is called in enough places.