It depends on how your opponents react. If the blinds are getting up there, then you're going to be jamming kind of wide, but you want to have a good estimate of what your opponent's calling/jamming ranges (if you're not jamming first) are.
A lot of players at lower sng's are supposedly weak/tight near the bubble. I dunno how true this is, cuz I don't do the sng thing, but that's what I hear. If that's true, I'd be opening a real wide range to 2.5bb's trying to just rob my way into a stack.
Otherwise, there's nothing wrong with folding for awhile till the blinds are significant, then just jamming when you think you have a good spot from the combination of fold equity and hand value. If you're playing (or watching) a sng with solid players, you'll notice that the game always boils down to a jam-fest, with a lot of folding, one guy jamming and taking the blinds, then every so often someone re-jams and the unlucky one goes home.