Never heard of him or the book.! What's it called.?

Can you give us some details, things like Size, construction material and the electrics he's suggested. A picture would really help.

To be honest the Electrics are easy really and depending on a few factors like Budget and machine size then the choice can be narrowed down to a small selection of modern equipment.

Regards the pulleys then to do them properly a CNC router really ain't the best tool for the job.?
The problem comes from a few factors but mainly boils down to the spindle and machine strength.! To make good pulleys you'll want a form tool and that will need slow spindle speeds which most router type machines don't have and it's quite hard and very expensive to find a spindle that can do both high speed for routing and slow speeds for milling.
Then the machine needs to be very tall to allow the 4th axis, which you will need, to fit and give clearance for tool etc. This compromises the machine strength making the Z axis need to have a very long extension for when it's a router cutting thinner material. A long Z axis flex's giving poor finish quality.

Really the two don't fit together nice unless designed very strong with a lot of adjust ability built into them. A machine built to be an all round machine will never be the best at anything and there will always be a compromise.

If most of your work is Wood then I'd build a router just for that purpose where it will excel then buy a Milling machine with 4th axis for the gear hobbing etc if really needed.? Or just buy the HTD pulleys ready made has most of the time unless specials or very large it's there not worth time and effort making them.!!

Give more info on this Willy bloke with possibly a pic or link and will gladly have a look.!