My bench that I did when i was about 12 and still have basically fits that design. I used a comfy sit with stool/stand height. It was 3' x 8'. Framed in 2x 4's. Topped with Masonite and fastened with 2 screws on the front ends.
About 3' up is a 1' Wide shelf. On the right hand side, there is 2' x 1' of basically wasted space closed in. Initially, I had a breaker there for the bench, but removed it.
I did put a double gang 4 switches there. On the front of the bench embedded in the 2x 4's are 4 duplex outlets controlled by one switch each. In hind sight, you need some overhead hanging cords too. You can, and I have, pulled soldering irons off the bench with my foot. There is also a switch for the bench light.
There is also a shelf about 6" high and goes from about 2' to 6' from right to left. The end of the left hand side of the bence has a drawer tool chest. The shelf has an outlet strip behind it.
A basic problem is rack mounted test equipment that's long. I have a 10 A, 0-30 V power supply on the top shelf at the extreme left.
In the back of the main bench there is also an outlet strip under the shelf. On top of that shelf is a Variac with an isolation transformer elsewhere.
There are furring strips on the wall and a plywood backer board installed.
I left 2' on the right hand side where I boxed it in below. It was supposed to be a fileing drawer. I did make a drawer, but it hasn't moved in years.
Under the bench is a space heater controlled by a conventional 24 VAC thermostat.
It basically lacks room for large pieces of test equipment. The scope can take up a large area of the bench.
Lighting is florescent tubes with an aluminum foil reflector mounted to the joists.
And there was a telephone.