The typical printers are far slower than people realize, at least until you start playing games with very large nozzle sizes and thick layers.

I have a 200mm print volume on my printer. I think the longest print I did (a vase) was somewhere around 10 hours. Something that fills the 200mm volume might take days. 600mm? Man, IDK, over a week?

Of course, the longer the print, the higher the chance of print failure.

Call me a naysayer, but there are reasons why you don't find a lot of info on large volume printers at the home or hobbyist level. I remember trying to help someone understand just the heat dissipation he was looking at in a heated bed for a large volume printer. The numbers were scary.

I'm admittedly conservative, so keep that in mind.