OK so I've listened to the start simple advise and taking each part at a time! So plan is to sort out the cabinet layout, power distribution, e-stop and switches first, then add controller and drives once the machine is actually built.
That way the low(er) cost and less complex items can be fitted now and drivers / controller / home and limits / alarms / faults to be added once the machine is built, and finally VFD and spindle.

I have this for the cabinet layout - does it look OK or any issues?

Click image for larger version.  Name: ext cabinet.PNG  Views: 2322  Size: 57.3 KB  ID: 27535

I'm planning to buy these - could someone confirm they are OK choices, especially the contactor! Looks like it is DC

https://www.rapidonline.com/mean-wel...cy-psu-85-5684
https://www.rapidonline.com/schneide...tactor-66-1939

Couple other questions from the never ending list:)
- Do I need to Fuse the drivers? They have overcurrent/voltage but I notice some people have?
- Are EMI filters needed with decent star grounding? I'm planning to add the EMI filter option on the transformer.

Possibly one day I can answer some questions:) On a side note, looks like quite a few builds stall or just about complete and then people disappear from the forum, big thanks to those who stick around to keep helping others.

Ryan