Interior walls and ceilings need very little support for metal siding. 4' is a typical spacing for wood wall purlins or ceiling joists inside a building. I have used as far as 7' spacing with no issues.
I'm not the biggest fan for how some put an 8 or 10' tall "nice" wall around the inside of a building and then put something cheap or nothing above that.
Consider logistics too. If you use sheetrock it isn't helping anything unless it's taped. Without finish mud, sanding, texture and paint it's ugly. Real ugly when it turns yellow in a few years. If your shop isn't empty for this it's a huge mess to mud, texture and paint (got that T-shirt too many times).
Metal goes up so easy on walls and ceilings. I've done areas of my building in tin where I was felling lazy and just ran the metal sideways on vertical wood framing. It looks decent and took very little time.
I'm not the biggest fan for how some put an 8 or 10' tall "nice" wall around the inside of a building and then put something cheap or nothing above that.
Consider logistics too. If you use sheetrock it isn't helping anything unless it's taped. Without finish mud, sanding, texture and paint it's ugly. Real ugly when it turns yellow in a few years. If your shop isn't empty for this it's a huge mess to mud, texture and paint (got that T-shirt too many times).
Metal goes up so easy on walls and ceilings. I've done areas of my building in tin where I was felling lazy and just ran the metal sideways on vertical wood framing. It looks decent and took very little time.