Our standard height for tall cabinets is 79-1/8", but we can modify that height up to 86"
We have 2 heights available for our base cabinets. We have a 35" and 27.5" high.
Your base cabinets should be 35-inches tall if you want to use them as a workbench.
The leg room should be a minimum of 24". This allows plenty of room to move your legs around while sitting down.
The height of those 2 smaller drawers are 3-1/2".