The equipment listed works with the Adjustable Rig platform. Couple quick points to remember:
For two grid low & slow cooks with the Spider, you'll need the 13-inch Ceramic Stone as the indirect piece.
The Slide Guide Combo is our favorite set-up for smoking 2-6 racks of babybacks with the 3-1-1 method. The ribs lay flat during the cook which is key in the foil stage.
The Rig Extender puts the grid high in the dome for hot fast, direct cooks, such as butterfly (spatchcock) chicken.