Wynn $10k Main First Hand For All The Chips

Had an interesting one and was interested in other perspectives.

Playing Day 1C of the Wynn $10k ME on my first bullet.

Very first hand of the tournament level 1 300/500 500 100k starting stack. We're four handed.

Villain is a very young white kid with over the ear head phones on. No reads.

PF: Fold, Villain on button opens to 1200, We're in the sb with KhKs and make it 4300, fold, villain takes about a 45 second pause looking at my bet and then makes it 10500, I call.

Flop(22k): Tc 3h 6c
Check, 6100,call

Turn(34,100): 3s
I lead 500, he takes another long pause and makes it 22k, I call

River(78,100): 7d
Check, he puts his head down and pauses for maybe about a minute and half, then goes all in for 67,600.

Wtf