Weirdly played rebuy hand

[Chief911]

I have 7500 to start this hand, villian has 15k or so, and I'm not sure what to think of villian, so sorry, no read.

Villian makes it 450 to go from EP. One caller between, and I call with 44 from the button. Blinds fold, and 3 of us see a flop of AQJ with two spades. Villian checks, caller checks, and I decide to be tricky (IE, BAD) and bet 300. EP calls, and caller folds.

Turn is Qo. He checks, and I check, ready to be done with the hand.

River is a 4c. He bets 1300.

Hero?

Nick

p.s. Preemptive strike, yes the flop bet sucked.