Sounds really good Ryan, good luck with it! If you need any parts measuring up for the screw cutting facility let me know – I think I've got just about all the gears and shafts etc.
Regarding the spindle taper, I roughly measured it…… with pin gauges…… aka drill bits reversed……
It appears to be MT0 and I'm confident enough to buy one to blue & try, so I'll let you know. The only thing I'm unsure of – is that the mouth of the taper is not 9.045 which it should be for MT0 but having thought about this I guess with the faceplate installed the centre would be hidden with it being so small, thus it may would want to sit proud so maybe this is correct, I'll let you know