20 or 24

So I have decided to learn how to unicycle. I want to get a cheap unicycle but not garbage so i looked around and picked the club unicycle. I want a 20 inch but i dont think that is going to work because i am 6 or 6 1 i am not sure and me inseam is 36 so would the 24 be better for me. O by the way i want to get into freestyle unicycling and is a 2 inch wheel ok for that?