On the dummy load front, the the little plug-in power meter using a nano board is complete and looks like it may actually be working! Next I'll probably tack it onto the dummy load to try it out...
The hard part though will be the enclosure. Couldn't find one I liked, so I'm planning to make one out of pcb.
Sure that's an option, but I have pcb material on hand and not a 3D printer.