Graf Spee would be an excellent idea for a campaign.
Perhaps you could contact the creator of the Graf Spee model that was added to SH3 and ask permission to import it into DC.
One word of warning. You would need to reduce poly number to under 20K and all the texture plates need to be squared. There are some model guidelines on my Iron Seas site.
http://www.ironseas.co.uk/6.html