I'm slowing building my spare tire kit. I ordered a new tire and alloy wheel (steelies were actually more expensive) from TireRack.com, about $200 mounted/balanced/shipped. I got a jack from a VW Passat at a salvage yard, fits and works perfectly. Ordered a bag for it from the Bag Lady (
http://www.njbaglady.com/Products/spare.html) and now I'm on the hunt for a lug wrench that I like. Depending on which one I like, I may have to get new lug bolts with the traditional 17mm heads so you can use a standard lug wrench or get one where I can use a 15mm socket.
The spare tire kit when done will fit nicely in the area between the seat and engine.