Brief report to say the project is temporarily on hold.
I've been distracted by this frame/fork on the market. For a variety of reasons, it would be much better suited for my project than the neglected Kogswell. After expressing my interest in this frame, I learned that (sigh...) I'm second in line. If the guy in front of me backs away, I'll elaborate on why I allowed myself this diversion. If not, the matter is moot, and I guess I'll move on with the original plan.
(...unless someone out there has a similar opportunity I should consider)