I go with bring everything too!
Even Quit covers, Duvet (it does get cold here in winter).
Another thing we did and wished we hadnt ,was throw loads of our clothes out. Not sure what height you are, but I find it difficult to find clothes for the slightly short. Again, even bring your jumpers and coats.
Not sure if you were thinking of shipping your car either, but they are expensive too here. If you hadnt got air con, dont worry, it can be fitted quite cheaply.
Not meaning to make it sound cold and miserable, we get lovely hot summers as well.