How are you getting the wing attach fitting loads into the spar caps? What about the uprights that the wing attaches to? Will that handle the higher gross? In a gust? What about the fuselage structure under your butt, which is literally hanging from the uprights to which the wing is...
It seems that the Skypup already fits your mission parameters. Since your design seems to be morphing into a pup, I don't get the point. Is this something that is actually going to be built or is it mental masturbation?
Hmmm. Build a successful design by a real engineer, or, "fix" the mostly imaginary "issues" using an analysis from some guy on facebook?
Maybe ask Roger Ford, Dan Grunloh or Mat Hivonich about the Skypup's supposed "inability" to handle crosswinds. Combined, there is about 60 years of flying...