3/6 do you guys value bet here?

[Victor]

bad player limps, tag makes it 27, co calls, i call on button with a6s, sb calls, limper folds.

is pf ok? tag had 720 and caller had a full stack. i cover tag.

flop is q66r. checked to me and i decide to be super trick nl player and check.

turn is 7 putting 2 d on board. checked to me and i bet 50 in to pot of 115. thats pretty gross, i think i should bet like 85-100?

anyway, sb calls and co calls. both are unkown but sb bought in for half a buyin and now has like 200 left.

river is jd and its checked to me.
theres like 215 in the pot. sb has 200 left. co has like 500 left.

seems if they hit a flush they would bet out right? so i should bet and hope sb calls with a q?