So, at this point I have a more concrete idea for my design. After multiple concept drawings, I decided I would like something like the design shown below. However, I understand that this may not be possible with my skills and limited amount of polys.
The dragon head on the front of the ship, for example, will be simplified to the more square design (seen right).
In terms of animation, I would like the animate the flippers to paddle in a sine wave and also would animate the propeller at the back of the zeppelin.
In addition to this, I have done some blueprint sketches: