About not having the tools to convert: You can get a chest freezer and all you need to do is take the door off, make a 2x4 frame which gets attached to the top then attach the door to that. The wooden frame adds night and is any easy place to drill through for your faucets and gas line if you choose to keep your tank on the outside. So all you need is a cordless drill, a bit for pilot holes for screws, a paddle bit for faucets, and a tube of liquid nails. If you don't have a caulking gun the liquid nails comes in tubes.
Since mine is in the cellar that's all I need. If I ever bring it upstairs that will be a woodworking project to make it pretty.