2003 Double Up?

I am going to try wakeskatting for the first time this summer, and I was looking at buying a board that would be fairly cheap but would fit a novice. I am looking at a Double Up 2003 40. I am 5'11" and 175lbs. Would this be a good fit? Is this a "concave" board. I see it has a continuous rocker, does that mean it is concave? Also how much should I pay for it brand new?

Thanks for the help and sorry this is another what board should I buy thread. Did a search and couldn't find anything about it.

Also if this is not good you have any suggestions? I would like to spend around 70 or so. Also seems most people like the concave.