Well, it's a bit curvy, which is pretty hard to do with flat sheets of foam, also EDFs can be tricky, and I have a general hatred for Cirrus...
However, I've being a part of this community has taught me anything it's that people here can build amazing things. If you really like the Vision, definitely give it a shot! If you keep the fuselage a box shape you can probably make it an easier build while still keeping it mostly scale.
Or you can just drop it in Ben Harber's lap and he'll have a completely scale good flying jet in a few weeks ;p