I agree with used equipment. After our fire I drove around the country for used.went to Niagra for tanks, Colorado for an apple press, Finger Lakes for a bottling line, etc. we do use some oak, but went to Ky for it. Still it's expensive. We, my kids and I are working on a 2400 sq ft building. Doing as much ourselves as we can, but still lot of moola. The building we did is ICF so temperature will be steady. Walls are 17 feet for tanks and the ceiling pitches to 24 feet. We are currently sheet rocking with 5/8 fire rock. A lot of fun at 20 feet.