I'm going to reinstall a couple of servers this weekend with 5.4. It generally is just a matter of printing out /etc/fstab, doing the install (I skip the upgrade on these), install some packages, and laying back down the configs and keys from source code control. It takes about 20 - 30 minutes to put these servers up (gateway, dns).
[edit] I should point out I've had a box running it before release to make sure that any changes are accounted for.
[edit] I should point out I've had a box running it before release to make sure that any changes are accounted for.