KK flops the world 3-way vs TAG and whale

original raiser is seemingly decent tag 16-13-5 over 500. Seems to be way too keen to call 3-bets (67%) and doesn't appear to have a 4b range. We get involved pre-flop quite a bit, but haven't really gone past a flop yet. I 3b him more than most, he does the same to me. SB is ubernit 8-6 and doesn't squeeze. BB is a 60-15 whale over 10 hands.

Pre-flop, calling vs raising to keep the whale in or even invite him to spew?
Flop, betting into two players here looks pretty damn strong and i expect a c-bet to work here heaps when i have T9s/A5 types of hands = check back ok? I obviously c-bet here all day if I'm HU vs the TAG. Given multiway pot size I don't need heaps of action to get stacks in, except we're baby deep. Thing is if i check flop -> bet turn I suddenly look monster-strong + it's way easier to get stacks in if it's over 3 streets. Turn sizing as played?

Full Tilt No-Limit Hold'em, $0.50 BB (7 handed) - Full Tilt Converter Tool from FlopTurnRiver.com

Hero (Button) ($62.40)
SB ($50.25)
BB ($68.55)
UTG ($50)
MP1 ($50.75)
MP2 ($49.50)
CO ($59.40)

Preflop: Hero is Button with K, K
2 folds, MP2 bets $1.75, 1 fold, Hero raises to $5.50, 1 fold, BB calls $5, MP2 calls $3.75

Flop: ($16.75) K, 10, 10 (3 players)
BB checks, MP2 checks, Hero checks

Turn: ($16.75) 4 (3 players)
BB checks, MP2 checks, Hero bets $8