Dave,
Nice job on the dovetail storage case. I think I could wager a guess at the organization of your shop if you are putting that much work into your storage. One rule of thumb I often use is when you have a drawer behind doors like your application, I always use a vertical upright wide enough so that when the door is open 90 degrees I can still pull the drawer open. (this depends on the door thickness, hinges,..) - Good job on the case.
Buddy