I’ve been pondering the best way to construct walls for my fully conditioned workshop in zone 6. I’d like to be able to not only build it but insulate it myself. Quality help is not available around here.

My current idea is the Klingenberg wall, OSB interior sheathing, fiberboard and housewrap on the exterior. The wrap would cover the tops of the walls as well. Once the roof is up, I’d blow cellulose into the wall cavities from above, inside the attic.

Does this plan have any obvious flaws?