Playing a good reg who is capable of overbetting and i am assuming making some exploitative folds. Never played villain before the limited hands before this though.

$200 effective
I'm dealt 76s
SB opens to $5, Hero 3bet to $20, SB calls.

Flop (~$40): J73r

Hero checks, SB checks,

Turn (~$40): Tr

Hero Checks, SB bets $25, Hero Calls

River (~$90): Q

Hero Checks, SB bets $50, Hero raises all-in to $155

Good bluff? I rep AK decently well and villain can never have AK. Villain pretty much capped at some 2 pairs (not all), some lower straights. He shouldn't show up with many sets if any. I don't think my blockers are that relevant here. What better blocking combos can I use here to bluff?