100NL, KK on ace flop in a classic spot

i just sat down there and villian looked bad with 43/13/6( 3 bet 25%) over just 25 hands. My first hand at this table. River just meh vs this retarded guy? I should probably bet something on the flop for value and got called by a wide range from such a bad player for sure. I know gabe's classic thread about KK on ace high flop .
No-Limit Hold'em, $1.00 BB (9 handed) - Hold'em Manager Converter Tool from FlopTurnRiver.com

CO ($119.60)
Button ($99)
SB ($61.55)
BB ($100.65)
UTG ($100)
UTG+1 ($100.35)
MP1 ($141.75)
MP2 ($90.60)
Hero (MP3) ($100)

Preflop: Hero is MP3 with Khttp://www.flopturnriver.com/phpBB2/...iles/spade.gif, Khttp://www.flopturnriver.com/phpBB2/...es/diamond.gif
1 fold, UTG+1 bets $4, 2 folds, Hero raises $14, 4 folds, UTG+1 calls $10

Flop: ($29.50) 10http://www.flopturnriver.com/phpBB2/...iles/heart.gif, 6http://www.flopturnriver.com/phpBB2/...es/diamond.gif, Ahttp://www.flopturnriver.com/phpBB2/...es/diamond.gif (2 players)
UTG+1 checks, Hero checks

Turn: ($29.50) 6http://www.flopturnriver.com/phpBB2/...miles/club.gif (2 players)
UTG+1 bets $10, Hero calls $10

River: ($49.50) 7http://www.flopturnriver.com/phpBB2/...es/diamond.gif (2 players)
UTG+1 bets $15, Hero ?

i think betting flop is ok, but so is checking behind. You don't need to protect your hand, and i don't think he is going to call more than 1 street with hands you beat if you bet the flop.

As played i consider raising turn but just call, and spew-call the river.

I like this hand.

Flop is a clear check. No point balancing or getting fancy vs a player we have no history with and who seems bad.

Turn is a clear call. Raising is a definite spew, yes we can maybe get villain to fold Ax but he seems bad and our line makes no sense so we just get called down way too often (and I think if you raise turn you have to follow through on the river to actually get him to fold anything and now we're really spewing!)

River I probably call. I think it's close, but he can conceivably show up with JJ/QQ/Tx and some bluffs here, although there are clearly a lot of hands that beat us in his range. Meh, getting >4:1 I think this just has to be a call without better reads. You obviously do get shown a better hand an awful lot here though.