The circuit board side is my biggest worry... I'll focus on researching that for now then, really I am so clueless in that area it's embaressing. Hopefully I'll find some sort of bodge workaround instead of paying an arm and a leg. I mean I could pay more, but I kinda dont want to!

Interesting with the power of the servo - looking on alibaba at similar 4 axis lathes with live tooling, they seem to be good with 3kW, which is reassuring.

Re axis - OK I am using X, Z, C and maybe B. Got it!