What's your reasoning here? There's 10,700 in the pot (6600 main pot and 4100 side pot) and it costs you 5400 if you push and the new big stack folds. So you are getting about 2:1 on your push assuming the big stack gets out.

As long as you're not up against AA, KK or a larger K, you're not in horrible shape. If you lose you're down to 29k and are still in a great position if you win you bump your stack to almost 45k.

This goes along with Giga's theory of taking -EV situations allowing you to get a huge stack if you win but still have plenty of chips if you lose.

But you have to figure that the new player has a pretty decent hand since if he's still fumbling with chips I think he folds most mediocre hands. The button also has to know this and be expecting to get called, which means he probably has a very good hand. One other thing to consider is giving a good aggressive player an extra 5400 in chips if he wins. If you feel the big stack will fold and you don't mind giving the button more chips then this isn't a bad spot to push in.

I think it's definetly -EV chip wise but will most likely give you +EV situations later. As people see you are willing to put a good number of chips in with K5 and will probably pay off your big hands and be afraid of playing back at you with mediocre hands knowing your capable of calling.