You know what? I'd just delay the order as long as possible and plan on getting delivery of the car in, say, March or April. I'm betting the weather where you are in the UK starts to suck a month after you get it as planned and you'll have to garage the car most of the time anyway?

Delaying your order and delivery for the nice weather might also get you the chance to get delayed options like tire pressure monitoring, etc AND a better more glitch-free car?

Just an idea. It might work for you.