Aqulion,Zypher,Or Juggernaught

[McNeo]

Both the Osiris and the Spyglass are originally Liberty designs. It makes no sense that Liberty would conveniently misplace the blueprints for a pair of ships that represent such a heavy investment in military technology (them getting stolen is farfetched enough). Im sure Liberty could begin their manufacture if they had a need for them.

The Osiris would be a good choice because you could RP its cloaking/shape shifting as you already do with the current Fort Louisbourg. I wouldn't decide which one you go for based on its radar profile as, one, there is no way to roleplay detection by radar without already knowing the location of your ship and two, the spyglass isn't as smooth as you think it is. Bear in mind that the turrets on battleships stick out in odd directions.

The Lane Hacker spyglass is primarily a deep reconnaisance ship, but Im sure with the colour that you've added to the fort louisbourg, this can be modified into an assault ship aswell. I'm not sure about forcedocking with a spyglass though.

For the ease of use's sake, I'd choose the Osiris. It navigates tight spaces with ease and has the thin side and rear armour that you talked about the current fort louisbourg having. The spyglass does not deal well with this, but it's redeeming feature is that the spyglass is really rare on the server, so it will appear to be more 'one of a kind' if you know what I mean.