if a festival is happening in NH, it should be primarily NH/VT/mass/upstate bands if you want a good turnout. CT breakfast fans are notoriously bad travelers even when the breakfast is playing, so i wouldn't even focus on the breakfast aspect. and i doubt NHers will come out to see a bunch of CT/NY bands they're not familiar with.
i'd focus on a band that has a good following already, is semi-local, and is very willing to headline a festival that isn't "their own" (e.g. indobox, higher organix), add a few up and coming bands that are super willing to get a decent slot at a fest (e.g. cosmic dust bunnies, psychedelphia, etc, etc), get some djs to spin all sorts of
**** (they're cheap), and maybe some friends' bands that are willing to play for little $ (e.g. weird beards). also, make it as cheap as possible and get plenty of artsy people who will do some good visual design for a free ticket/perks. also, don't make it all jambands/djs. gotta mix it up with some indie/folk if you know local bands that can do it. separate yourself from the crowd with an interesting lineup.
essentially, make it the big up minus the top 1/3 of the bill.