Nice about the shuttle to simulate crew relief.
What I find a bit exploitive is to have a civilian hull, so 3 months intended deployment stay 10 years in space. I would not like be one of these poor guys in a 420 tons structure.
Now, as I said, when you have 100 jump points and more to watch over, I guess this is a necessary evil. I went first with a military design, using fighter hull, to put a bigger sensor, but you don't need that big of a sensor to detect what exit a jump points.