Hello Indyaachen,
concerning the weather, I had the same thoughts before making the decision for Spain. But then, in my case, I couldn`t fly some days in Spain due to bad weather. And some days it was at the limits. However, weatherwise this was an exceptionally bad period when I was there, which has happened once in 50 yrs.
Coming back to Germany to fly, I was very cautious concerning weather, thinking that it was going to be different. But things were not as bad as expected. Of course one should analyse weather before.
An idea might be to get an FI in Germany for one or two hours to experience flying in not so perfect weather conditions. Helps to become more confident with weather.