A/C recycling machine in a service truck

Thinking of pulling the trigger on an AC recovery/recycling machine for use in the shop and mobile. Is there any issue hauling one around? Do you have to remove the recovery tank? Any issues with the scale calibration?

I'll probably go with a Robinair as that's all I have experience with. I'll get some PAG oil and dye. What else do I need?

A/C recycling machine in a service truck