Have you thought about taking a couple of classes at a local community college while you have your year out? I assume you are working full-time, so you won't have a lot of time for school, but maybe you could fill in your (for lack of a better phrase) " mathematics gap". I think that might look good on your university applications and help you get into a CS degree program. It'll also keep you in the 'school habit'. ;)

Your academic background sounds good enough to get you into most universities, so it's a case of where you want to go and what you think you can afford. However, what you think you can afford and what you actually can manage may be two different things. If you haven't already, talk to financial advisors at the universities you would like to attend. They should be able to help you make it all happen. Good luck!