I'd start decluttering now.
Be ruthless, I ditched my wedding dress, it had been in suitcase for thirty years, was a size 8 and no one wants a late seventies Princess Anne style frock.
The man cave (garage) took a week to pack, I wanted to hire a skip and bin the lot but DH vetoed that idea.
The big blue Ikea bags are great for bedding, towels, clothing, etc.
Those big woven plastic zipped laundry bags are just as good If you don't have any Ikea bags or live too far away from an Ikea store.
You can find them in hardware shops for around £2 or £3 each.
I left clothing in their drawers, removed the drawers from the chest and taped a bin bag over the tops to stop the contents falling out. Made it easier to sort out at the other end, remove the bin bags, put the drawers back into their chests, job done.
Those vacuum bags are good for bulky stuff like pillows, duvets, soft toys, you don't need to get expensive ones, the ones from the £ shop are fine for the length of time you'll be using them for.