77 Eighthanded, overpair to the flop!

[mmbt0ne]

Ok, that makes sense. The 8SB already in the pot has to have some bearing on a decision though, right? Having those extra 4BB already in the pot has to make up for some of the times when you raise and miss.

I'm have no idea if this is the right play either, just trying to understand the theory behind making it.