I don't care what the organization requries. You need the full kit, I'll just reiterate what Hammer said.
2 piece leathers with full 360 zipper. (an alternative, if you like is an Aerostitch 1 piece, but NOT most other textile gear and
especially none of that worthless mesh **** like a Joe Rocket Phoenix) Good leather gloves with a gauntlet. Leather road riding/racing boots. Back protector. Helmet less than 5 years old that is DOT/SNELL approved.
Anything less, and I don't think you, nor anyone else, should turn a wheel on the track.
Shop for deals, look at used, don't worry much about style, and you can get respectably kitted out for about $600.
Good place to start for deals.
http://www.newenough.com/index2.htm
What size is your foot? I have an old used pair of Alpinestars boots I'd sell cheap. Size 11 I believe, blue and white. They're not great, but never crashed, and miles better than timberlands.