I've done the coan/phillipi workout several times. It took several times just to figure out my max. I ALWAYS underestimate it now when doing that routine. It's very intense and has you moving a lot of weight quickly. I had to tweak the assistance work for myself and ditch the stiff leg deads. I did some hyper extensions sometimes instead.
I know this post is a two months old, but if you haven't tried it I would definitely say go for it. I would say try it off season if you compete, to get a feel for it and try to get the weights figured out. You can even put in a max you know you can do anytime (a safe weight) and run the program and I'm sure you'll come out stronger by the time your done.
Peace, and good luck,
Mad_dawg