I don't think it's an issue of how many components there are, but the collective mass of a vessel like that, may be a little chunky, given the redundancy of necessary equipment.
Good idea though on the Gravitational opposites, I'm thinking that when used properly, the components could separate rather quickly. Surprise, diversification and a quick attack, would be advantageous.
But all in all, Akira has that covered for the most point. It is rather simple to have a Launch Bay, and just burp out some Defiant or smaller Fighter size vessels.
So, I'd rate this...
Application: Ummm so so.
Concept: GREAT !
So, why not focus on the Concept...
What else could one do with highly controllable Gravitational Fields ?
Have a good Day !