(blind, but I'm a n00b)

Raise the flop, call a 3-bet, fold if unimproved and bet into on the turn. If no flop 3-bet, assume you are the lone top pair here. Even the donks usually bet out with any pair on the flop, so you need to find out where you're at.

After a flop 3-bet, you'll be getting 6.5 to 1 to call a turn bet. You have maybe 5 outs, but they aren't clean considering the SB is following along and EP limpers are likely to have an A. I think it's a fold (edit: if bet into that is).