I built this for a survival play I'm doing and I was just at titanium then, I have gotten to naonite and I just took the armour plates off the top and used the transform tool to switch the titanium generators, integrity fields, and power containers for naotine ones and added a shield block replacing a hull block I left in the middle. I also switched the small blocks connecting the engines to the main block with hyperspace cores giving me about 4+ jump range.
The trick to manoeuvre ability is to use super thin thruster plates instead of cubes. Thrusters work on surface area instead of volume. Essentially build three heat sink shaped with scaled down to .025 and give the smallest gap possible. Look at the mandalorian ship for an example. You save weight and increase thrust tenfold
I did put some thin strips of thrusters around but I needed 1 block worth of length in the front there, at first I just put a hull block but I wanted a “useful” block there so I went with thrusters. Maybe I should have used a framework with thin thruster plates on the sides or a heat sink shape to save weight, I'm getting alot of ideas from the ships posted here, my second ship build should turn out better. ;)