Nice thread (madtom, it matsy from DTB), so much too yap about!
hands like this one are why we NEED our software. I like PT3, try both and see what you like.
As for the hand, flatting the 3bet is the worst option. At 10nl playing a 3bet is way out of most players comfort zones. Moreover, we're oop against an unknown... Do we really want to get into 3bet pot here?
Go for the 4bet and get it all in if villain shoves. There is no need to 4bet half your stack as the OP mentioned. I think its Hillbilly that said 2.40ish which is spot on. With no info on the villain I would much rather get it all in with QQ than try to play postflop oop.