GRF? your dream boat is done!

I always respect those who have the energy to give things a go, more so if they also have the wit to make something that actually works albeit perhaps within certain parameters. Given it's stated low weight, sail area and righting moment this will doubtless be quick. If you like it depends on how you define good design and I suppose that really depends on the set goals. To some it will be a brave step forward into a new world and to others blundering further down the lane of limited usability.  

You'd guess so, most things float too high when capsized anyway to my mind.