Its way to heavy to fly as an ultralight under Part 103, which has a 254 lb maximum dry weight. Its probably too heavy to fly as a light sport, which has a 1,200 lb max gross weight limit, compared to the SureFly's 1,500 lb max gross weight; if you derated the max gross to make it LSA legal, then you'd only have a useful load of 100 lb, including fuel.