I researched some more and found some other analog mod threads, giving me a little better idea. It's not like there is a big problem with mine the way it is now, though I have noticed it is burning through wood chips much faster than it started out, I'm replacing every hour at the latest because the chips are charred. I know I'll for sure add a couple small holes at the bottom sides. I don't know much about the air flow, but I can place it in the bottom & remove the drip tray if that is the best place.. then Where the water pan sits place an aluminum pan on that rack to collect drips. Normally I have my meat in a pan or in the rack below the pan anyways, so drippings are not a major deal.
The good news is my AMNPS is delivered! The bad news I had it ship to my school house, because I didn't think it would be at my home before I left for school (just adds to the suspense hehe). So when I get back I'll first try the AMNPS where my chip tray sits, and add couple holes to the sides.
The idea of adding the mailbox was just an idea I've tossed around this week, because my buddy wants to add one to his smoker for a couple pork bellies he picked up. Figured why not add one to my at the same time. Keeping in mind as much moving around as I do (& the smoker, I stopped leaving it at home lol) something easy to take apart, & even smoke w/o the mailbox if necessary (but not a big deal if I can't)
Edit: Gave a shout to Dave O, thanks Bear.