Very impressive build!! Any more updates?
I built a smaller version a few years ago from a free plan in the much missed Scale Model magazine in the UK designed by a guy named Dave Stirchley. It was powered by the lovely OS 26FS and flew pretty well on its maiden until an overheating motor quit in a banked turn an she stalled in.
I liked it enough to consider a larger version and I am in the process of tracing the same plan as you into Draftsight and scaling it to 60 inch span. Looking around online for some reference photos had me come across this thread, which has been very informative, so thanks for sharing your build.