I know I am jumping in late here but I do a lot of work with the Daytona lot at Sandown and I am sure they would be very happy to accommodate the club for a proper race with Qualifying etc. They have much faster 2 stroke karts as an option too. I race them...badly, in the championships and they do about 60mph rather than the indoor 4 stroke stuff you get at Crawley.
Feel free to e mail me and I can ask about dates they have a closed evening or arrive nd drive on. Basically if enough people book from the same place they can turn a normal session into a proper race format.
ade@holdermotoring.co.uk