How low do you go?

[Brunger]

You are playing in a B&M 10/20 or 15/30 game and you are in the Hijack with the two tightest players in the game to your left one good and the other weak. The good one is on the button the other in the sb and the bb is a monkey. There is a single limper who is the biggest fish on the table for onliners something like 60/5/.5. What is the bottom of your raising standards? Does it change if you are on the button and are their any hands with which you overlimp? What about 2 limpers both poor playing the other not quite as bad?