Good advice, all around.
If you keep watching the classifieds, something in your range is bound to turn up, and this site is a very very good place to pick up quality used gear.
I like the idea of buying a bow at the low end of your draw weight and getting good at shooting, then moving up in poundage.
When you start shooting, have fun and pick a spot. And remember, "aim small, miss small; aim big, miss big."
And don't be shy about posting questions if searching the site doesn't answer your questions. Folks on Tradgang are GREAT!
Kirk