Windowd File Sever 2003 Migration

I'm in the process of wanting to add more storage and update/migrate 2003 to 2012 without disrupting file shares/security settings.  I know there isn't a upgrade path from 32bit to 64bit and unfortunately there are a bunch of databases that are stored on the server that may have been hard coded to the server name that would break a lot of things if we where to just migrate to another server.  Is it possible to build a windows 2012 server as the same name as the 2003 server. 

1. Export HKLM\SYSTEM\CurrentControlSet\Services\LanmanServer\Shares registry key from the source server
2. Disable SERVER service on the source server (to be sure no one is modifying data during migration)
3. Run RoboCopy using /COPYALL key (or /SEC key at least)
4. Import registry file (exported in the first step) to the destination server
5. Restart SERVER service on the destination server (required for imported registry file to take an effect)
6. Un-join the 2003 server from the domain, join the new server with the same name as the old FS to the domain?