Sounds to me like you are hooked on quilting!! I think you have the basics that you can do most of the simpler quilts with. Many of our members here have good luck at thrift stores either buying fabric or men's shirts for the fabric. Many members here also sell on our board fabrics for cheaper than in the stores. For patterns browse
www.quilterscache.com. It is a free site. Also another good place for ideas and free patterns is
http://quilting.about.com. Have fun!