Linear time: it depends how many aircraft I build/repair during the process, how many contests & fly-ins occurr during and what my wife has planned for me (not necessarily in that order).

Actually, a lot depends on how accessible documentation is, complexity of the project and availability of some components. For instance, I'm considering building my own retracts for this project. I have some rough design work done and I'm going to have to prototype this to be confident it works. The prototype gear alone will probably require a hundred hours (very rough estimate).

My chief concern at this point is the fact that the wings are quite thin and I'm concerned with the attach point (I plan to have them removeable at the fuse side) combined with the fact that the gear fold inward and up into the fuselage. If I wasn't designing this for competition I would likely thicken the lower wing to accomodate. Also, there's little room for the hardware with the gear interfering with the cockpit floor, it looks like I'm going to have to be strategic with gear placement under seats etc.

I've never kept track of actual time spent on a build, it's a good stress reliever and time flies in the workshop. My Triplane took about 3.5 years with a solid 6 months on the cockpit where most of that detail is hidden from the camera by the pilot (but I know it's there )