Honestly, it is not that good of a design. For starers, its range is a bit too low. What you can do to make it better is to have 0.7x - 0.8x power engines, you keep about the same speed but you get a far greater range (also add a bit more fuel). Secondly, its far too weak. You should have at least 4 layers of armor, but I recommend 6 layers or armor plus shields (or 8 layers if no shields). You have hardly any weapon systems. Go to the Ships topic and look at what I'm able to cram onto similarly sized ships (the Floreal is an exception as that is a sensor craft with giant af sensors). Drop the deployment to, at most, 12 months, at least 18. That level of maintenance is fine for a military craft.