I'm in the same boat as you, and I've been slowly but surely knocking out the credits I need for a degree.  Trust me, an associate degree is not enough these days.  At a minimum, you need a bachelor degree.  The bachelor degree today is like the high school degree was about 30 years ago...without one, it is very, very difficult to be considered for a decent job or a promotion of any kind. 

A business degree is a good, general degree to have.  It will qualify you to manage in nearly any line of work.  You got some good advice here as far as taking CLEP exams and racking up some fast credit.  The schools to consider are Thomas Edison State College, Excelsior and Charter Oak State College.  All three are relatively affordable, and don't forget you can quality for student aid at any age, although Excelsior does not participate in any federal student loan programs.  Western Governors University is also a good option and will let you advance through the program as quickly as you can work and pass their exams, or "competencies" as they call them.  

 Have you taken any corporate training or military training courses?  If so, they might be worth some college credit, so don't overlook that, either.  I'm currently studying with Penn Foster College, but I'll be applying to Charter Oak State College soon and plan to wrap up my BA very shortly afterwards.  They seem to get high marks from many students for great customer service and they are very willing to answer your questions before you apply or enroll. 

 Don't wait any longer...get started today.  You may even find yourself wanting to get a graduate degree later!