Johnny, do you mind if I build a 3d version of this eventually? If I remember correctly, you are just doing this in photoshop, right?
By all means, go for it. And in actuallity, I use GIMP, not Photoshop. GIMP isn't my first choice, but it's free.
However, "Maddy", if you are to use my design, try using a slightly more updates one:
Top one is what she looks like will all cargo pods, middle one is to show what she looks like under the pods, and the bottom one is all our favorite DY-100, the Botany Bay.
Btw, the reason that the body goes really thin near the rear of where the pods are is so that crew members can open a hatch located on the thinner part and get into the cargo pod's secondary access port in case of emergency.
Still need to figure out where I'm gonna put the fuel pods on this one. I'm trying to keep 8 of them, but 6 could work too.