Make sure your design could fit inside. JJ may not care about such things but we should.
Why SHOULD we? If it's important to you that every square inch on a ship that's not real should make sense, that's cool. But that doesn't mean that everyone SHOULD. They can do whatever then want.
And please, the JJ bashing is so 2010.
As for the design, very cool. Very different. Can't wait to see the end result.