imo, proper research will teach you enough about schools and their environments for you to develop a sense of whether a school would be a good fit. I was in a similar boat -- non-trad, little disposable time or income -- and didn't visit any of the schools until I was accepted. At that point, the visit was crucial. Besides, I'd rather risk wasting $70 on an application to a school I later visit and dislike than waste a lot more $$ on airfare, gas, hotel, etc. to visit a school that may not offer me a seat.