I'd have to agree about the G-23-might be a tad of overkill. I am flying mine with a OS .65LA and it has all the performance that plane probably needs.
That box spar idea sounds reasonable for getting the wing in two pieces.
Coincidentally, I have a Sr. Telemaster wing to build, but I want to build this one different. Reason I have a wing to build is that several weeks ago I lost the plane due to a elevator failure/mechanical failure/pilot error (not catching it on inspection). I now have a perfectly good original wing, built to the plans, but I want to do something different with the new wing. My thought was to go about one rib outside the fuse, and put some sweep in it, just for kicks and to see what it would do. Any of you "Telemasterites" have any thoughts on that idea? I've abused the planes about every other way and it doesn't seem to affect their flying ability, just thought I'd try something different. Open for suggestions.
Randy