I agree with Snowolf. Spend the first day or so getting back in the swing of things first to see how much you remember. After that you can start focusing down on what you want to learn.
Personally, I'm a big fan of focusing on one new technique at a time, especially in the early stages of freestyle. Repetition in a short period of time + focus on one specific movement/skill is the quickest way to get that muscle memory to memorise new techniques.