[Koha] Moving from Fedora to Ubuntu

I'm about to shift the server that currently runs Koha 2.2.3 from fedora Core 2 to Ubuntu Dapper Drake. I propose to use the opportunity to upgrade to the latest Koha (2.2.5). I'm proposing to do this as follows: 1. Dump Koha database 2. Wipe machine 3. Install Ubuntu 4. Install Koha pre-requisites 5. Install virgin Koha 2.2.5 6. Restore Koha database from (1) Does this look reasonable? Or should I restore the original database between (4) and (5) and let the installation have its wicked way with it? Help and advice very welcome. Thanks Nigel