I have a decent image. I limp in EP w/ [Qs] suited. Big stack with 2500 who is laggy but not insane makes it $75 to go. couple of people call, i jjoin in.

FLOP $300
[7s][8c]

Checked to raiser who bets $300 and obviously has a hand. Back to me... I hesitate and push for $2100 more.

Thoughts?

If he obviously has a hand, why push? Unless he's disciplined he'll pay you off decently if you hit. I mean you obviously don't want a call from anything better than JJ... It's real read dependant. Do you think he's good enough to lay down a big pair here?

Based on the way you played it up to that point, I think the check raise all in is prefect.

He should fold at least half the time. When he calls, youre not going to be far behind. Obviously high variance though. I normally dont play like that live because you get so few good hands that losing a double stack is almost impossible to get back. Online its a different story.