$16 - Please comment on my play here

Ok, so this is not exactly standard for me. But part of this is, that these situations dont come up all that often. My intention here was obviously to make opp think I am trying to push him off a split pot.

This is the very first hand of the tourney.

PokerStars No-Limit Hold'em Tourney, Big Blind is t20 (9 handed) Poker-Stars Converter Tool from FlopTurnRiver.com (Format: FlopTurnRiver)

Button (t1500)
Hero (t1500)
BB (t1500)
UTG (t1500)
UTG+1 (t1500)
MP1 (t1500)
MP2 (t1500)
MP3 (t1500)
CO (t1500)

Preflop: Hero is SB with Q, K.
UTG calls t20, 4 folds, CO calls t20, 1 fold, Hero completes, BB checks.

Flop: (t80) 3, 4, 5 (4 players)
Hero checks, BB checks, UTG checks, CO checks.

Turn: (t80) 7 (4 players)
Hero checks, BB checks, UTG checks, CO checks.

River: (t80) 6 (4 players)
Hero bets t100, BB folds, UTG raises to t280, CO folds, Hero raises to t1480, ...

This seems read dependent. If you think he'll call you with inferior flushes, sets, and straights, then go for it. You've got the third nuts, get as much money as possible.

I assume no reads given first hand of tourney unless you have played with him before. It's alright I think. I mean an 8 here will call probably, 89 def., worse flushes and maaaaaaaaybe some crap thinking it's a split. I do think you'll get a call almost always with a smaller reraise so it's tough to say.

bet turn

I like river shove, smaller raise makes your hand easier to see.

I don't mind betting the turn but I think I'd like it more if there were 1-2 less opps in the hand with us given there is four to a straight on board and we act first.

River shove is good, if he has a higher flush or a straight flush I pay him.