Here are some photos of a guitar I converted from fulcrum to recessed Floyd, which may help.
I know you're asking about a build from scratch, but the principle is identical, esp. as this guitar also had no neck angle!
Mine was cut using a large CNC milling machine, and using dimensions which I found on the internet eg. Jemsite, Ibanez, Floyd Rose sites etc.
(I even remember looking at the spec drawings in an eBay listing for a FR bridge, which was very useful actually!)
So, it started like this:
Had to install a hardwood block to compensate for some gaps, then onto the CNC:
Job done!
The depth of each rout is easily calculated.
Following the success of this one, I've had a set of three routing templates made for me (in thick perspex) using the same dimensions, like so:
Each template corresponds to each different routing depth required.
As a guide, here are the depths I used:
Template 1: 6.35mm (shallowest rout; and determines overall "footprint" of recess)
Template 2: 15.85mm (this is mainly the area at the back of the the bridge under the fine tuners)
Template 3: 46mm (this is the hole for the sustain block, and goes right through the body and into the spring cavity on the rear)
The depth of the holes for the bushes can be calculated by measuring the actual bush to be used.
As you can see, I had them made to include centreline guide marks, and holes for locating pegs to ensure correct placement!
Haven't had the chance to try them out yet, but I expect no problems.
I also had templates made for the rear spring cavity and recessed cover.
Maybe not 100% what is being asked for here, but I hope it helps anyway!!
DJ