QQ in MP, ok line?

[the 9]

Bet half the pot on the turn, if you get raised in this spot, dump it. If you get called on the turn, check behind on the river or a call a smallish bet if he leads.

I don't really like a raise on the flop of 623R if I've limped preflop, I'd call the flop and raise a non-ace/king turn to keep the pot smaller and make my turn decisions easier.
I can't see how raising the flop defines villain hand any better, other than he probably has a PP if he calls and folds overcards. If you had just called, you may also have got another barrel from overcards or another bet from 77-JJ depending on the turn card.