Put up a number of “Star” brand buildings in the past. The choice to buy these was because the upright support columns for each bay were a simple straight beam and were easily built into the wall so that the interior walls were flush with no columns encroaching into the space. Many steel building brands use a tapered column where the exterior face of the column is plumb while the interior part of the column might be only eight inches thick at the bottom but then tapers into the interior by as much as two feet at the top. If your building were forty feet long you would have maybe two twenty foot bays with one “break” in the long walls due to the intruding columns. So if for example you wanted to put up pallet racks or another type of shelving you wouldn’t be able to have a continuous row of shelving flush up against the wall. Since we’re talking pinball you would have the same issue. I’m not advocating for Star Metal buildings, I’m just suggesting using whatever building brand that allows you to have straight columns so you end up with your interior walls being flush.
Another aspect of steel buildings is the bolt through steel roof panels. These are not the best option. Try and upgrade to standing seam metal roofing. Standing seam will likely outlast your lifetime and it is ideal for the installation of solar panels. Just my 2 cents.