Wherever you go you will
have to do some classroom studying. I too have the same problem as you and found the following to be the best solution:
Instead of BristolGS who require 2 x 2 weeks I use CATS who require 3 x 1 week. I am also spreading the lot over 18 months so that I will only have to take 1 week off this holiday year and 2 weeks the following. Not 100% ideal but works out best (for me at least).
DS