it really depends on your opponent, if the stakcs are not deep its most likey a even money race or he may be in there gambling with mid PP ( i dont respect a stack under 40xBB)

***I find in lower levels people ovetbet strong draw hands and underbet monsters (resulting in a lot of bad beats and end up blaming the site)
Against the underbet i think you need to play for trips vs the overbet, it depends on the player, check out the hand history see if this guy has been taking down a lot of pots playing way too many hands if any of these is true you can push. If he has been in the table for 40+ hands and only showndown 1 hand, you can fold ez.
Poker is the game of people the most important question is who rasied me and how has hes play been so far, don't fold to the fish who goes all in with AK after missing on a 238 rainbow flop you know who you are