The Beast is a pretty full on shape for a initial build.
I've owned a beast, very uncomfortable shape to play, so bad in fact, that the guy who designed it (Hoffman) re designed it with Neal Moser to make it more playable
So my initial advice is to check out Neal Moser guitars and base your build on the re design.
On a side note, the re design was canned due to BCR placing cease desist court orders on it, claiming the Beast to be their design, even though they stole it from Hoffman in the first place after he asked them to make him ONE, then they started getting them made in Korea as their own design.
Good luck with the build and welcome to the forum