Larger front wing (since I can only get the first one to rise above 50% of the time), and shorter mast (total of 24" inclusive of mounting plate and fuselage) so I don't hit the bottom. For comparison I've got this wing on top of a Slingshot Infinity 76cm front wing (got this through a deal with an old friend).
The feedback on this foil setup has been positive. The dimensions of the modified kit components are very similar to this one - but while I'm building up the kit, I'll be using this one in the surf. Looking forward to comparing them all!