Going from a conversation I had with Jim, I think you need around 15 riders before they will consider it a championship. I am sure someone will sponsor you for trophies
Can you get that?? It would still have be mixed grids even with 15, but get yoursleves 30 entrants and you have your own grid, which then poses another question of fitting the race in!!
But like Dom says, enter one extra race, and its extra qualifying and another race for £30.