Just a couple of points. First, I think you could get into most universities, particularly if you test
well. With your life experience and past studies, you should test higher than, say, when you first
finished high school.
Second, you should be able to CLEP out of some classes and possibly get credit for experience.
Third, I would collect the bulletins of institutions of interest and read through their requirements. You should be able to get a pretty good "read" from these. Also, there may be a few that you wouldn't want to go to after reading their literature. Most are online; so, you can scope them out even before receiving their mailings.
Finally, if there is a school that interests you but may be a little hard to get into, you may still want to apply. They may accept you with some stipulation such as specific course requirements, or minimum grades, etc.
All the best