This is my second long wall workbench setup. I have about 12 feet of cabinets 7 inches shorter than I want the saws to be at. I add shims under my CMS and RAS to get them to the right height. Where I do not have saws, I have a 7 inch tall Paulk style worksurface with movable stops for the saws. The workbenches have all drawers. I find them much more useful than shelves. The longer cabinet has simple drawers made of 3/4 plywood joined by pocket screws. I dovetailed scrap 3/4 softwood for the other cabinet. The drawers do not have slides, they just slide wood on wood. I have hardwood storage above the saws. It rests on short pieces of conduit slide into holes in the doubled 2x4s of the wall.
I use a 12 inch CMS and a RAS partially because they don't require as wide a bench as a slider.