Previous progress pics: The Propulsion stage was sent up first. I used a crude Munshine-like rocket to put it into 75km orbit. Okay, I admit it, it actually took two tries to get it to orbit, as the first rocket didn't have enough fuel. :/ Here as you can see, the cargo block had been docked to the propulsion module. It was a pain in the butt to do it, because I forgot to attach a RCS tug to it. Lucky, the PM had RCS, albeit they were a little weak. The large space in the middle is for storing cargo or extra fuel. The habitat module has been attached and the ship is awaiting its first crew. It should have about 4200 m/s of dv with a 8 ton CEV and 20 ton payload. The mockup: I assembled this early mockup with Hack Gravity. If you compare this to the actual ship, you should see the changes I made to it.