Hey BG what are you using to shape your neck? I can recommend a Shinto rasp, if you can get hold of one, also Carbatec do some really good curved and straight razor files for some of the finer shaping.
The templates look Schmick, are you going to seal the edges with superglue? I’ve found that this really helps both preserve the template integrity and gives the router bit bearing something smooth and hard to run on.
Really keen to see how this goes!