Oooooh sounds awesome hun!! Very jealous! Don't worry about not having enough room for shopping in your suit case, just pack the goodies in a big box and send it on a ship.
If you get good quality thermals you won't need to pack heaps of really warm clothing. We went to Scotland in March one year and it was so bloody cold I thought I'd die. And it didn't even snow that winter so the locals were saying that the weather was mild. Mild my ar*e@
Spain on the other hand sounds so nice.....

PS If you haven't noticed I haaaaaaate cold weather and I was born in Poland!!! lol. Go figure