Rusty, I can't tell you how much you will regret not enrolling in an adult ed class or @ UMKC and just going for it. It will be frustrating, humbling and you'll feel like you aren't making any progress for months if not years, but eventually you'll get to a place where you're happy, or get to where you always feel the need to know more.
I am getting complacent right now, need to hop back on the wagon and go back to reading bbc in spanish every day before I pick up a newspaper and watching the spanish channel in the Morning "Despierta America!"
I've just started laying the groundwork for my next language adventure:
Cornish. 8)