Updates:
Table is looking awesome. Mostly clear steel across the whole top. There is pitting and rust in the low spots, especially where they sent a drill into the table.
I was there until 1am last night going over wires and my plan. They have line voltage coming in to a transformer, which then feeds a bridge rectifier, which then hits a big capacitor, which then feeds nice filtered DC to all 3 driver boards. It works perfect, I won't change a thing.
They have their 3 phase coming in (I don't have 3 phase) that hits 2 big contactors wired in parallel, which then feeds 3 phase to a breaker, which then feeds 3 phase to the spindle motor. I'll feed 220 to my VFD, which will feed 3 phase to my motor. So those massive contactors will go bye bye and be replaced by a smaller setup for 220 single phase.
Heres the best updates:
I purchased Mach 4 hobby, and downloaded fusion 360 and have been learning them. They're awesome. I took drafting in college for 2 years before going to motorcycle tech school so it was simple for me to pickup. Then I bought a PMDX-424 smart BOB USB control board. This will interface directly to my current driver boards and allow me to run this Bridgeport with my laptop.
IIts all coming together!! Thanks for all your help with this. I'm up to around $1,200 total in what I've spent to get this thing going, but that includes a 6" mill vise I bought, the board, Mach 4, etc... Everything.