That's really cool. I'd never have thought of making an anhedral and dihedral biplane wing like that. I'm pretty keen to investigate weather that will actually fly and what kind of aerodynamic characteristics it will have. I'll let you know if I can actually make it fly
There's a lot of control and lifting surface area there so it would probably have a low stall speed as well as the ability to climb and turn fast.
There would be a lot of drag though because of the extra leading edge surface added by the second set of wings either limiting the maximum speed or requiring the use of a larger engine increasing weight and reducing payload capacity, this is actually why Biplane and Triplane designs of WWI fighters were phased out in favor of the single wing designs of fighters used in WWII