Heated bed is no problem, I have junk-box kit that will cover that easily for a bed around 200x250mm.

I realise Z travel is a factor, if I pull the floating head off, I have 100mm to play with which for what I currently have in mind is plenty.

My Z travel is 0.01mm per step without micro-stepping which seems to be well in the ballpark of what others are using. Cant find much regarding the XY travel resolution yet but I have a strong feeling this machine will be ideal.

Interesting stuff