I want to build some storage cabinets in my basement. I have space under a bulkhead to build 2 boxes (approximately each box = Height 65" x Width 48" x Depth 46" ) with adjustable shelving and 2 24" doors.

Since the box I'm planning is deep, I'm thinking of placing 2 adjustable shelves that are approximately 48" W x 23" D at each level (1/2" oak plywood boards). I'm planning to use 3/4" oak plywood for the "box" using rabbit joints to secure the sides and 1/4" oak plywood back panel (glue & screw). Approximately 1 screw every 5-3/4".

My questions are: 1. Is the dimension of the "box" too big and will it be unstable? (I can secure to a wall) 2. Should I use pocket holes for extra security? 3. I want to use adjustable feet (like the ones used for kitchen cabinets) vs placing the "box" directly on the floor. Is this a good idea? If so, how many feet per box? Thank you for your time, Peter