I built what may be a later version of the kit, all the parts laser cut. I think the only unusual feature is that the center sheeting is doubled (2 layers). I carved bucks for molding all the top and bottom pieces, intending to make more later for other modelers (which I did). But carving the kit's blocks is not hard, using a small model-builders wood plane. If you can build a Legacy 40 you can certainly build a Nobler! I say go for it!
Is yours the version with the severely asymmetrical wing with 2" of difference? The "51-52" Nobler, aka "Original," has a little more wing area than the later '57 version since the tips are narrower compared with the later version. Same square inches but more airfoiled flying surface on the early version.