If it has been used for racing it won't be in the best state of tune for bimbling down to the local cafe. Most likely a Close Ratio set of cogs has been installed, so first gear will easily exceed a 30 mph speed limit, before you even open the throttle.. Also a racing cam, and the highest Compression Ratio Piston, for the fuel that was available.
Seems an absolute shame to hack it about by fitting an electric starter... I hope you don't..