~%10 of effective stacks is fine.
fwiw I'm almost always seeing flops with any pair from any position, and usually calling a raise to do so. Occasionally I'll even call a 3-bet if it's small enough and/or if there are enough people in the pot.
Something to think about is how obvious it becomes when you flop a set to your more observant opponents. When you limp-call or limp-cold call two bets, then start putting in tons of action on the flop, your opponents will sometimes be able to get away from their hands, so you have to do some balancing plays.
Something I do is I'll often donk hands like 99 into T72 type boards because not only will you frequently have the best hand and take the pot down right there, but it balances your play really nicely when you bet-shove or bet-call then ch-r all in on the turn with sets.
Anyways the point I'm trying to get across is that you shouldn't be calling the particularly big raises or 3-bets if you don't balance your play well enough since you won't be winning full stacks postflop as often.