[25NL] T8s...BDF gets there

CO - 23/17/2 (3bet) over 148 hands. CB 75%.

SB - 16/14/9 (3bet) over 244 hands. FTCB 100%, 3/3.

PokerStars - $0.25 NL (6 max) - Holdem - 5 players
Hand converted by PokerTracker 4

CO: $46.07
Hero (BTN): $36.86
SB: $26.60
BB: $36.48
UTG: $54.37

SB posts SB $0.10, BB posts BB $0.25

Pre Flop: (pot: $0.35) Hero has T 8

fold, CO raises to $0.75, Hero calls $0.75, SB calls $0.65, fold

Flop: ($2.50, 3 players) 7 9 8
SB checks, CO bets $1.25, Hero calls $1.25, SB calls $1.25

Turn: ($6.25, 3 players) K
SB checks, CO checks, Hero checks

River: ($6.25, 3 players) 5
SB checks, CO checks, Hero bets $3.50, SB raises to $11.25, fold, Hero ???

Firstly, is checking the turn OK? I didn't want to bet and get raised and have to fold my hand when I have so much equity.

I get there on the river, and get c/r...and I really want to fold. I don't think he is ever raising here w/ a straight or a worse flush? The only hands that really make sense are AJdd, A9dd, A6dd, QJdd, but I think most of his suited Ax probably squeeze pre? I really don't know.