Tabel to spindle clearance of small CNC Mill

I have a Deckel G1L frame which will be getting an MT3 milling head
grafted onto it. It will be converted to CNC, and used for hobby
work, mostly one off or short runs, in Al and Steel.

The Z travel is 300mm. No quill travel.

Table is 600x250mm with X travel = 300mm and Y =150mm

What would you recommend for a minimum spindle nose to table distance?

Regards,
Mark