You got 1/4 of your stack in there already.
I played a hand just like this the other day...I got all the money in last, two guys in in front of me, I had KK.
They showed QQ and JJ.
JJ won, fortunately, so I didn't have to triple up. Cause damn, I hate tripling up.
Anyway, just stick it in. Then you won't have to feel like a baby when they flip TT and AK.