This ship, although military looking, is a commercial spaceship used to transport civillians or cargo. Used mostly on the planets Zyyanbar and Tarsis, it has been tested to reach a maximum speed of two thirds the speed of light.
This is interesting to mix a tie fighter with a plane body. However, I got to agree with another comment, it would be cool to see some more customization on this. You got a great idea and you started on the right track with that idea. But I would call this, phase 1; go back to it, pull out the Legos, and do some more modification. Call that phase 2; do as many phases as you need until you got something that really, really stands out and makes us, your viewers, go wow! But I still like the idea behind this.