How good is the simulation? Does it take the characteristics of water into account at the correct speeds?
You can maybe try to import these sections into your program and let me know how it compares. For symmetrical (keel and rear wing) I would try e836. For lift (front wing) I would try e904. You can get them and more from here: http://www.ae.illinois.edu/m-selig/ads/ ... abase.html
Yip, rear wing should be symmetrical. You want all the lift from the front wing so that your centre of pressure (and thus centre of gravity with riding) are further forward and the rear wing can act as a stabiliser. Obviously the rear wing has no angle of attack (if you can adjust this afterwards to tune the foil it would be good). Front wing angle of attack depends on how much lift the profile makes and how much area it has and what minimum speed you want. I would imagine with AR=11 you want high speeds, so maybe aim for AOA on the front of 0 as well and only rely on the asymmetrical profile for lift?
For the front wing, multiply the wingspan in cm by the average chord length in cm. It should come to around 500cm of front wing area. Rear wing maybe 1/4 of this.