That's an awesome robosander, chabón.
In Argentina is difficult to get a router, that's the principal tool that we need. Then you need also a lot of things, like rulers that they are freaking expensive also. And a ton of more stuff.
Saludos!
This it's an awesome idea!
Considering that actually you have only de RG2228, the conklink that are really expensive, and a lot of other luthiers that can make you an 8 string.
This will work if you have a good price on the guitars.