Some pros and cons that I can see.
Pros: Nice size tank
Firebox size looks good from the pictures
Shows great potential
Cons: Bottom rack configuration, hard to add, remove, or mop meats
Top rack is useless that close to top
Firebox door and vent need to be remade
Stack coming out of the middle of the tank, traps a lot of heat above the stack. Move to top
Suspension, personal preference
According to how much the smoker is going to cost it could be a great base to work from. Move the stack, add some baffles, reconfigure the racks and fix the fire box doors.
Keep us posted on what you decide.