...as to the PRS... I haven't found one that will work without modding either the template or your uncut headstock. I have a tracing of my forbidden headstock, uncut, that I have been using to play with potential shapes. I superimposed a PRS headstock shape over it that I found on Pintrest.

https://www.pinterest.com/pin/492510909227906676/

Unfortunately, it looks like the bottom is wider than the uncut forbidden headstock. Here's a pic so you can see what I mean:

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PM me if you want a PDF with or without the forbidden headstock tracing under it.

I played with it a bit, and think, since you plan to plug the holes and re-drill anyway, you might be able to stretch it a bit and get something like a "snakehead PRS"...

Click image for larger version. 

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I don't have this last graphic to scale, but could probably get it that way if you like it.

I like the original PRS. Not sure what I think of it's snakehead version.