[anatta]

I think you should just go ahead and three bet here. I used to most of the time just call, keep pot small, and check raise the flop if I hit. My reasoning was, these guys aren't going to fold to a three-bet, so what's the point. But now I think either they do fold after limping in, so I get dead money in, or they don't fold, and they probably have made a big mistake.

Your fold on the flop is a good one, IMO. Many players go too far with just overcards, when its raised to you, that almost always means bail.