Instruction s don't specify, I'm using sealers choice gold on travertine tile... I just wanted to mop up the floor first, but is there a drying time needed?? The floor had been sealed once but only one coat was used.. So that's why I wanted to add another coat

First thing let me apologize for the long post I have a metal barn with a room that has 4 1/2 inch vertical metal pipe along the walls (secured in the concrete slab and attach at the top to the roof I beams) spaced different lengths apart. The longest run between the pipes along the wall is 14 ft 9 inches (there is a roll up door between those 2 pieces of pipe). The other pipes are spaced 11ft or less. Why the aren't uniformed I don't know. The total room size is 33ft x 12 1/2ft with the ceiling 15ft in the center and gradually sloping downward in both directions. What I'm wanting to do is build a ceiling 9ft tall across the whole room with a staircase and use the top part for storage. The bottom part would be kids game room and insulate the metal walls up to the 9 ft ceiling and insulate between the ceiling floor joist and the floor of the storage space and install can lights. Will 2x10's be adequate to run around the walls attached to the pipe ( longest run between pipe 14ft 9 inches) then attach 2x10's running across the room every 16 inches on center to those 2x10's attached to the pipe. Also, how do I attach those 2x10's to the pipe. Bolt and nut? What size and how many. Any other suggestions on the build are appreciated.