Installing kitchen cabinet bases on uneven slab
I'm building and installing cabinets as part of a complete kitchen tear out and remodel. The slab is out of flat in general and in particular slopes down from the base plate along the entire length of the exterior wall. I'm building 2 base units to span the 142" run against the exterior wall (separated by a dishwasher opening). This should make the job of leveling less complicated. I'm considering 2 methods of leveling: 1) build a ladder frame toe base and scribe it to the floor then place the boxes on top, or 2) install a 1 x 3 level cleat along the wall, land the back of the boxes on it and use leg levelers in the front. I'm leaning toward #2 because it's less work and pretty much guarantees dead level-thru on the 2 independent bases.
Anyone use the cleat and leveler method? How did it work out? Recommendations on leveler type?