Hi. Concerning the interior sapce of your ship, you could make a little bit of space in the "ears" of your "mosquito" vessel... (sorry but it really looks like a mosquito...). Actualy you could place all the energy tanks in the wings, unless you intentionaly doubled exterior walls of the wings. That would give you a little bit of free space to develop a little bit your interior.
Another good thing (at least for me...) would be to smoth a little bit more the exteriors...
As fos the vessel style, only thing i can say is... it really is original... Any way, keep it up.