That is the scenario we're facing with BitsyBox. We love every minute that we're working on it but I wanted to get some feedback from the HN community about whether we should start thinking about it as our big jump out of the corporate developer's life.
Basically right now, we go to our corporate jobs during the day, come back at night and work for four hours on it -- this can't be uncommon. We're ready to make the leap to work on this everyday / all day -- but we'd really like to have some seed funding or be ramen-profitable first.