I really wanted to start a ship of my own, but in light of there being so few players willing to join I'd have to play it on my own >_>
Here's my suggestion, should your custom ship fall through. It's the class that I was/maybe-still-am going to use:
The Mersina-class is built by NovaCorp, but not many have been ordered so it's fairly rare. It's also a rather large vessel, at five decks and 300x100x50m in dimensions, but it's also got _very_ good living spaces (for my ship, I was going to have the captain strip all of the excess trappings -- like the marble floors and gold trim -- and pawn them to help pay off the ship) and can be run by one person if necessary or with a recommended crew of nine. Coincidentally, that's the same number of characters that Serenity had : p (since comparison to that show continues to pop up).
The Bellystabber class, being a Yui-variant, is also highly effective, especially if you're looking to be able to put up a fight (which, I know, we said wouldn't be necessary.)
There's also the Vampire-class, but that's already being used by the Yggdrasill, with good reason. It looks very good at its job.
So...yeah. Do with that information what you will.
On the side, if anyone wants to join but Gamer passes you by, lemme know and I'll give your character a look : )