Instead of paying $295 for Design Foil, I would down load X-Foil free from:
http://raphael.mit.edu/xfoil/
In the description of Design Foil there is no mention of laminar seperation bubbles. It may be that it doesn't deal with this important aspect of low reynolds number performance prediction. I don't know of any program that deals with low reynolds number airfoils better than X-Foil.