AJo preflop

[gulebjorn]

Interpoker 50$ NL

I have AJo in CO-1. UTG limps, others fold to me. UTG is tight but raises/re-raises his big hands PF. I limp. CO and button fold. SB raises to 4xBB. He's been raising a lot, regardless of position. Has shown down AQs after one of those. Never shown trash/bluffs, but still looks like he's raising loose, just because of the amount of PF raises. BB calls. He's weak-tight. UTG calls.

What is good strategy here?

Do I raise instead of limping in the first place? CO is very tight, button is LAG, but still pretty solid.

Do I fold/call/re-raise the raise?

All comments are welcome.