Mil hand...good bluff? Stupid spew?

[gimmetheloot]

Hero has ~21k, blinds at 100/200
BB is a loose dude loves to call riases pf.
MP likes to limp and fold flops.

BB covers every1, MP has like 7.5k

Folds to MP who limps, Hero raises to 775 in CO w/ A8o, BB calls, MP calls.

Flop (2.2k) 323r, both check to Hero, Hero bets 1600, BB calls, MP folds)

(maybe not the most prudent bet, as MP can c/r here a ton but has yet to do so ever after LCing pf, and this flop cant really hit BB range)


Now im putting his range to mostly pairs, and I guess hands with gutters like A4s and such.

Turn (5.4k) Ko, BB checks, Hero bets 3800, BB calls.
I dont think his range is that much changed, just him getting stubborn now..

River (13k) Jo, Villain leads 5k, Hero shoves for 9k more to him

Yes/No?

I feel that even though its not a big raise, its almost impossible to call here with his perceieved range unless its 43s or 22...