$200 NLHE Full Ring: raise JJ over straddle, flush completes on turn

There is a button straddle for $5 and I am in the SB with I make it $20 off about $500.

tight older asian man 2 to my left flats off about $700

folds to the straddler who calls.

pot contains $63

flop

I Cbet $45

old man flats. straddler folds.

turn pot contains $153

now. I don't really love that card but it brings me a flush draw, a gutshot and a straight flush draw. I decide to keep betting to decide the amount that goes in on the turn. I have never seen the old man bluff raise so it seems safe enough. I bet $50. he instantly calls

River: pot contains $253

I check. he bets $100 and I fold.

Questions: What is the best decision on the turn? Should I check call? check fold? bet a different size?

I like check calling on that turn and we can check call some stronger hands as well to protect our check calling range. Given villain is on the tighter side it's unlikely they make that many calling mistakes Vs multiple streets of betting