The more I think about this, the more I think I will pull a Les Paul drawing and use that as a baseline.
If I leave the lower bout intact and move the upper bout to 19", that should give me a nice, clean line for the forearm facet and also allow lots of options for the cutaway.

If I leave the lower bout intact and move the upper bout to 19", that should give me a nice, clean line for the forearm facet and also allow lots of options for the cutaway.