A kilometre on foil

I have settled for a time on this set up:

SUP sky wind board

75 cm mast

Standard fuselage 

1800 front wing

310 tailwind (not the one shown)

Duotone 4.5 m SLS wing with carbon boom, not standard, 3D printed ends on a carbon stick.

The 1800 front wing is fairly slow, but I don't need more speed.