Hello guys, had a spot in 25/50 NLHE live vs an experienced pro. Not too sure if my river call was good.

Blinds 25/50 i started the hand with $4400 and i raised on the button to $125 with 7s 7h. BB had me covered call.

Flop is 6c 6s 4c, pot is $275, bb checks i bet $140 and he xr to $500 i call.
Turn 3s,he bets $860 i call.
River 3d he puts me all in pot is $2995 and i basically have to call a pot size bet.

I think my range has 6x alot and if i were to pick overpairs to call,77 and QQ might be one of the better hands to call with. 88-JJ should fold alot i think? I'm also not sure AA/KK non club what would we do here? Am i over valuing 77 for blocking effects here considering we block alot of 76o combos.