The move is only 10 miles (in town to the country) so I don't think we will be stopping at McDonalds to feed the fish. :D

IMO trash or donate that seeded existing sand bed to your local reef club or trade some with other local reefers
Why? I was thinking about using some of the current sand to seed the new stuff but I can skip this if you think it is wise.

If I went all new, do you think I should get some different live sand to mix with the new clean sand or just go with clean sand and let the LR populate it.