I believe they run practice on Sundays. It's $5 last I heard. Check the website for more info.
For sc carpet racing there aren't too many tires people run.... The stock sc10 tires or clay compound suburbs.
Rustlers are a little tougher to get carpet tires for if I remember correctly. I think they do make the suburbs for them though. Anything with pins on them will just get scrubbed off by the friction on the carpet so I'd look @ the street tires available for that model.
What Greg said.