Fid, you are quite young compared with some amateurs! However, while there is a junior 125cc class, you will have to compete with the 500cc novices. I have, though, seen someone do that (at Scunthorpe); he did score some points, and was not lapped. I have seen some novices lapped, but the lappers were then promoted to the next class. Hve a go - you will enjoy it.