Whatever you are doing make that the last to pack. As a realtor, if the manufactured is not conveying with the land, you can sell it on craigslist, Zillow, Trulia, or in your local paper. Word of mouth is good. Down here we have a couple papers that are local ad papers. If you have a local ad flyer, you can put it In there. Also you can send a mass mail out over the Internet to friends and family with photos of the home attached. Whatever stash you are not using and know you will not use, store that. I would absolutely make sure everything is in water proof containers. Good luck on your move and your sale.