Hi, I plan on coming to the Summer Slam trophy race this Sunday and enter the Sportsmen class. I've never been to a real track and a race before so I don't know what to expect. I hope you don't mind my stupid questions below:

1) Do you only accept cash for the entry fee?

2) I'll be scrambling to put my shortcourse truck together over the next couple of nights and won't really have time to test it out. If something breaks or the truck stops working for whatever reason during the event, would I be able to switch to my other car for the next heat?

3) I'm guessing there aren't many restrictions in the Sportsmen class. Do you see any issues with my setup?
Arrma Fury 2WD, Traxxas Velineon 3500kv, TowerPro 996 servo, Pro-line Scrubs T M3, Zippy 2S LiPos
Backup car: Vaterra Glamis Uno Desert Buggy


Thanks in advance.