[dazp1976]

Okay - since I'm going to want to "grow" the system with the least weirdness - Can I start off using one of the linear power supplies, run a pair of 570s, and a big Nema34 for the Z? And then as time passes, and the cash becomes available, just swap out the motors for the Clearpaths?

I wouldn't have a clue tbh.
All I'll do is run a big nema34 1600oz/in on the Z using this:
https://www.ebay.co.uk/itm/400W-60V-...y/222238530997
And 2 nema23 425oz/in from this:
https://www.ebay.co.uk/itm/Switching...YTYu1HML5TgcCg (36V 10A)

On a X2 I'm running 3 23's 425oz/in using 2 of the 36v power supplies and they've been brill.
2 on 1 and 1 on the other.

I will need to get 2 nema 34 1100oz/in for the table on my new one early on but for now I'll just get it going for testing using the 23's I already have.