Middle Limit Hold'em

[Mikey]

What would you do in this situation. I got this from the Bob Ciaffone and Jim Brier Middle Limit hold'em book.

pg. 194 Problem 15

A $10 - $20 game. After two early players limp, you raise with AhKs in middle position. The button, big blind, and limpers call. There is $105 in the pot and five players. The flop comes: 8h 7d 4s, leaving you with overcards. Everyone checks. The turn is the Kd, giving you top pair, top kicker. The big blind checks. The first early limper checks. The next early limper bets.

What would you do and why?