1 & 2 - you probably don't need.

3) Rivet gun - good brand?
4) Wire crimper and wire stripper - there are many different styles out there, what style(and brand) works best?
Rivet gun - get a hand one if you need it for $15 from Home Depot.
Wire crimper / stripper - same as above.

Toe gauge - easy to use 2 straight L pieces of aluminum and four bolts to build your own. But if you'll be racing for a while, the Longacre one are nice.

There are tons of people at the track who are more than willing to help you and let you borrow their tools. Just be sure to bring them back.