Coreopsis is easy to divide and so is snow-in-the-summer. The others
are easiest to propagate from seeds or simply take the entire clump of
plant with you. If you have several clumps of galliardia (for
example) then just take a few. Most lupins are very hard to move,
your best bet there is to start over with seeds.

You might want to take some plants as soon as possible so if some die,
you can always go back and get more. As others have mentioned, heat
and drought stress is your major worry. The plants on your list are
pretty hardy, they only need to be watered frequently until
established.