Hey Shelf.
Good move

Its really not worth putting anything in the car when you bring it out here. I Imported a Midget couple of months ago and put a load of spares in it. Customs wanted to process them separately, rather than with the car, ended up paying more in processing fees than they were worth. It would have been cheeper to post them.
I also know someone that imported an Austin Healey, and he had a load of personal effects in the car. When it turned up they were all missing.
New kites are cheeper in the UK, but if you look around you will find places that will send them out postage paid, and will also sell it without the VAT for export, or bring them out with you.