Hi, Jools - If you’re not going to use it at the track, just sell it as it is. Track bikes sell, just not for the top return seen for stock bikes. If yours is like mine, the loom would be the biggest headache, as I’ve stripped it down.
Mine came with a racing faring, so much like you, the bodywork will need replacing to even attempt a refurb.
The street hardware is expensive.
I won’t even suggest braking it, but the person who buys it might use it for parts. Not a lot of difference except a bit remorse on your consciousness.
I guess the big question is, “The condition of the bike and can you prove it with receipts?”
Good luck.