I'd limp along preflop, you dont have very good position and you can just limp for set value. On the flop if you hit a set, on a board like that its almost certain that someone else has flopped something along with you, I'd bet maybe 3/4 of the pot to make someone with a straight draw pay for it and hope for action against someone who has hit this flop.

Since you raised, I would not check this flop. When someone raises preflop and then checks on the flop, alarm bells ring off that this guy has a monster. Bet maybe 1/2 - 3/4 of the pot and hope someone puts you on a continuation bet and raises you with a Q or a J. Also, checking can give free cards to someone with K10, 910, AK, A10, etc.. to hit a straight and bust you.

Honestly I doupt it would have change something, but definately you should havce be that flop...

Its almost sure somebody has a pair or a good draw and you want to build the pot when you are still the front runner + you want mid Pocket to pay if they want to hit their sets.

That said with a standard bet KJ would have probably called and then be really happy with the turn and then break your ass on the river... soo... no need to worry to musch about the hand, but try to be a bit more agressive with future botom sets. same for 2 low pairs...

KJ

You do have choices on the flop besides checking and pushing all in. Making a bet that's a decent chunk of the pot size (say, half to two-thirds) will chase away any draws and maybe get player #1 to fold (he only has second pair at this point, any queen beats him) while still allowing some hands worse than yours to stick around and give you more chips.