Don't move into a mobile home unless you just absolutely have to do so. You will probably regret it. A lot of folks do. Being a quilter, you need as much room as possible. We have a 12X16 wood buildng we built with Home Depot material. we spent just over $1,000. That included paying a man $160 to put on the shingles. If family could halp with the framing, etc., you can really save. We paid retail for everything too. No labor cost that way. Labor will be more than double material costs. Wood doesn't sweat like metal or frost inside. We didn't insulate, but I highly recommend it for your health and utility bills. Even the floor should be too. It will be much more comfortable and usable longer each season. We don't have windows, but you will probably want at least one. DH built the door, but suggest a double door of secure status, either wood or steel that locks. We will add both later.
DH is storing a diassembled airplane in there also. You will need room to walk around your quilt frame and room to sit. DH is an electrician, so he wired it. get LICENSED pro for that or results may not be good in the long term.
Former Realtor