Aren't there a gazillion small, two place designs in Europe that would be just fine for carrying one large, heavy person?
I looked up Switzerland. Apparently, it's not part of the EU. So I wonder if any of the EU rules are implemented there. I also wonder if Switzerland recognizes the certifications of other nations. There is a flying replica of the Be.60 in the Czech Republic, and perhaps it was a certified airplane when it was originally manufactured in the 1930's.The challenge here is that microlights in Europe are limited to 300 kg gross weight for a single-seater and 450 kg gross weight for a two-seater. If remaining in the microlight category -- usually easier, cheaper, and less hassle than amateur-built standard aircraft -- you're stuck with those numbers + 5% for a ballistic chute or + 10% for amphibious operation for the time being.