can we use some concrete blocks to block out some corner at the yard, dig up the plants and move then there and fill with additional soil. will that work? do we have to plant them in the ground properly?

If you could pot them up in nursery containers, it would make the second move in 6 months easier. Otherwise, heel them in (loose planting) in some loose soil mixture, probably containing a lot of not too large bark nuggets or coarse (like from a chain saw) sawdust. Heeling them in, in a corral of concrete blocks or landscape timbers would be fine.