Blinds 50/100 Live NLHE. Bind battles and sb is a respectable pro whom is very solid and strong player.

He raises to $300 and i 3 bet to $1000 with AhQd (14K stack), he 4 bets to $2500 (covers me) and i call.

Comes 3c 4 s 5h rainbow he bets $2000. On the flop seems like a standard call although we might be drawing slim particularly vs KK/AK. Not sure if we could have a raising range here but seems disastrous if he jams. Have a bunch of over pairs as well in my flat 4 betting range so i don't think he could ever go super crazy.

Turn Tc brings a fd, he checks and have around one psb left. I could jam here and could have some fold equity vs his hand. Being overwhelmed by his table presence,i got clumsy and couldn decide if he was weak or strong. I checked back to realize my equity.

River 8, he bets $3000. Now, here's the spewing starts. His hand seems like a block bet that targets my A high type hands. I still have a lot of over pairs and sets(TT/88) in my range that i would definitely jam for value. Am i over bluffing in this spot as its not like i have a ton of value hands to play this way? Could jamming the turn in generally in spots like this with our entire range better than checking? Thoughts pls