If you are going with a “package or metal building” be aware that actual purchase prices can change quickly due to crude oil prices. Over the years I have seen big swings in prices due to fluctuations in the price of a barrel of petroleum.
Also I would keep the building all steel since that is...
I agree with everyone on the Victor setup. Besides the cutting torch and welding tips, I would look into some rosebud tips for heating metal. They are more efficient for the use you referred to.