Hi,
Very sorry about the seasonal affective disorder. Funny, I'm also having some of that, and I'm living in Spain!! I'm from the Southwestern USA where it's sunny nearly 300 days out of the year, and now I'm living in Northern Spain and all this cold rain has got me missing the desert!! It's definitely not sunny here. But, I'm sure it must be sunnier in the south, where you're thinking of moving. Maybe you could go there on vacation, to study for your exams? hehe. Have you spent much time in Spain before?