Let me just say this right off the bat. I would recommend the double pan gravity feed or more commonly know as a GF around here. I have a similar setup and I put 28# of jerky in it this past Saturday and still had room to spare. 28 square feet of cooking racks in my little vertical GF. I run it with a CyberQ and sit in my recliner and wait watching netflix or making some other smoked products in another portion of the rig.
jm2cw
Current Smokers: Backyard RF Offset and Hybrid RF Offset trailer rig with Cowboy cooker and fish fryer, always room for more........
Did you want to stay with an offset design like craig at bell fab made for you or go to the GF design from the prints available. You could always replicate from Craig's design (which looked really nice with alot of shelf space) and draw up your own plans. Its a shame what happen to that smoker and the red tape your going thru. Good luck.