plo 400, value bet the set?

[mosta]

I have Ah Ad 6c Tc. I limp UTG in an almost full table. so far so good?

Ac Qs 7d. 5 of us see this floop. I lead the pot, $20. 3 callers.

9c. I bet the pot again, $100. one call behind me, one more all in for another $30 on top. so 3 of us, one all-in, see:

Js. I'm new to this table--new to this game. My impression of the players is generally loose, weak. Easy value bet? Check call for a bluff?