I don't know the details of this (sorry!), but I seem to recall reading that the laws were recently changed to allow relief of student debt if the debtor had worked in the public sector, education, etc. for a certain period of time.

Since you're in a bit of a tough spot, and could continue your business efforts on your own time, you might consider seeking a job in those fields.

I hope that helps.

And, for the record, I thought the kickstarter idea was a great one. Certainly, I think you'd have to be quick about it, as that's the sort of thing where it pays to be first to market.