@Moby Ric Some pics of big cooks on kamado. These are on Kamado Joe Big Joe 1. The round expander rack is from CeramicGrillStore, the flat sided expander rack is the Kamado Joe expander.
You likely get more usable space on a pellet or horizontal due to grate shape. The round kamado shape results in some awkward wasted corners, and the way the deflectors move air, the outer edge always sees more heat and airflow, so if you have a sensitive cook the outer 3" on each side isn't ideal, which really shrinks your cooking diameter. (That said, I often intentionally use that outer ring as a hotter cooking zone while something is cooking low and slow in center.)
As mentioned, if you want unattended cooking with ability to adjust from your phone anywhere, Fireboard or Flameboss temp controllers. A full load of coals will run 12hr+.
4 racks of ribs. I've done 6 with careful rib racking, it gets tight. Potato wedges holding them apart so smoke gets to all faces.
25lb of dino ribs and a 13lb brisket:
A whole lot of wings.