I say take it to the track and run it like that. You probable want to run the larger wheels but will end up needing new rubber. The jelly beans are the type of wheel you have on the left and it is the original wheel of the RC10. It is hard to find new rubber for the jelly beans and if you find some you probable don't what to run it.
Run it with the wheels on the right and get some new tires recommended from the local guys and order some new wheels.
You will find several different ways of making modern wheels work on the older car.
http://www.rc10talk.com/viewtopic.php?f=38&t=8848