This layout module looks relatively simple.
Wiring required.
Bottom/back side.
Add (4 track) wiring.
Non-derail and switch motor wiring.
Red, White, Blue and Black are (4) track circuit power feeds, Green is common. Small white and red is non-derail and switch motor wiring. (3) and (4) are small track side dwarf lights.
Most holes were done with a standard 1/4" bit, a long "ringer" bit was used on occasion.
Screw gun and associated driver tips.
Assorted larger diameter drill bits.
Hole saws for even larger round holes.
And the big stuff, 18" Ship auger and Milwaukee "Hole Hawg" drill.
Have fun making saw dust Mike CT.