I was ready to type up a big rant on why 3betting this is bad but stacks got to it before me.

We have a good hand that plays well in position against villains opening range here but not so well against his contiuance range to a 3bet. Sure we can 3bet this and it CAN be +EV but so can 3betting K2s in this spot. K2s is rather weak to flat preflop but we can turn it into a bluff and flop big once in awhile when called. This hand has value, and will actually benefit from seeing a flop with a higher SPR.

We don't want to be 3betting this guy with ATC just because he's in LP or just because we're ahead of his opening range. 3bet for value with hands that are ahead of his contiuance range and bluff with hands that just junk.

Just thought I'd point out a common error in the micros. Just because we are ahead of his range, does not mean we can bet/raise for value. In order to bet for value we have to get called by a worse range.