I havent done CC, but have played with YAYOG, My goals are to progress thru the 4 stages (Basic, 1st class, master class, chief class) I am at the 1st class stage. If I ever get to chief class that means I am good enough to do one arm pushups with feet elevated, one arm chin ups and full range of motion pistol squat... For me thats enough of a goal.
You dont have to start at Basic level start where you think your current level of fitness is at it may be 1st class or higher and you can sub in exercise harder or esier if you need to. At then end of the day either of the programs will better than doing nothing. YAYOG is 4 by 10 week programs but may take me a few goes of Master to reach chief.