(Edited because I did not realize there was one caller of the raise).

Assuming no info yet, I would probably raise to 120 (60 more to go). This would likely make the limpers fold because of them being sandwiched between you and the raiser and caller, thus narrowing it down to a manageable 3 handed flop. It further will help you define your hand against the raiser and caller. If they both just call, it is unlikely they have aa or kk, and you can put them on a broad range of solid drawing hands (ak, aq, ajs, etc) or middle pockets). If you hit your flop, you can then bet or raise with confidence. However, if one comes over the top, since you only invested 120, you can easily let it go.

I might just call if the two limpers are calling stations, however.