You could bring it along to High Wycombe. Doors open at 6pm-ish. It's a small carpeted and very tight indoor track with big jumps and we race 18th off road but myself and Alec Springer has CAT SX's and sometimes Doughty has his B4 there. It's not a big heat but 3-4 10th scale off roaders on that track is busy enough! There is obviously a chance that no-one will have their 10th buggies there which means you could be on your own
but you'll be allowed as much practise as you want in between heats. Only an option if you have nothing else. You might even get a go with someone's Shark while you are there
http://www.wycomberacing.co.uk/contactus.htm