How many pork bellies....

It's getting cooler in Florida, and I want to make some bacon. I got some additional upper racks for the MAK 4 star and have four total upper racks plus the two main racks. I want to order some pork bellies but it's been a couple years since I handled one and I don't recall how much space the last one required on my smoker. I want to buy enough to fill the racks. Also unsure if I would want to load the lower/primary racks and take the trays out and out the cold smoker below, one on each side.

I realize animals come in different sizes, but in general is there a rule of thumb for sizing pork bellies?

Thanks

TD

I can usually fit two 12ish lb pork bellies in my MAK 1 Star.