We have a unique multi-level kitchen island design, and without going to specifications of it, I am curious to know if there are any issues with the cabinets that make up the island can be less than 3.5" above the floor (standard toe kick height). Note that the island is made up of a combination of base and wall cabinets, and while we would need to cut the bottom of the base cabinets, the wall cabinets would go over a frame made of framing lumber, like 2x3s, making the cabinets be 2.5" above the floor and allowing us to use window casing as base molding. There not be any toe kick space.

In case you are wondering, the top of the counters will vary between standard 36" and 42" for bar height.