If you already have 1/10th off road, then you already have the best buggy for doing this.
There is the 1/8th class electric, and Losi do an almost-RTR which looks fantastic. It isn't cheap, and it isn't recognised as a class yet within the BRCA. Its down to your local 8th club to accept it at there club meeting, or if they allow Nitro only. I have heard a story of a club allowing an electric 8th, which wupped the Nitro's and then the club changed there mind and didn't allow it again.
Stick to 10th for the time being.
