Party 2k bottom set vs. presumed top 2

[Ian J]

Don't have very strong reads here as I don't play this game much and I'm not on my main comp. Opponent is GrekkoStyle FWIW. Stacks are effectively 2k.

Fish limps UTG, I limp 77 behind in MP1, about 4 limps and the blinds play. 6 to the flop.

KQ7 rainbow. Checks to fish who bets $20, I make it 125, couple folds and then Grekko makes it 250 from his BB, fish folds and it's on me. I considered raising again but I thought I could do a lot to disguise my hand by just calling so that's what I did.

Turn is the ugly 9s (2 spades now). He checks and I consider checking but then bet about 2/3 pot, $450 or so. He calls. We head to the river w/ $1500 in the middle and about $1300 in each of our stacks.

River is the 2h and he checks. I thought about betting like $600, but then thought that would look fishy and ended up just sticking it all in there. Not sure if I like it now. Thoughts?