[raze]

H1 - Is his post-flop game as loose as pre-flop?? Wait for a better hand to make a move like this UTG+1.

H2 - If BB is so tight, he's either got a set on the flop or a big draw like 76s, so you need to check the turn, and fold to a river straight card / call a brick / check river behind.

H3 - Check/fold ... if you put more emphasis on a range of AT+ then you are beat not only by any King but by many Aces-up combos.