When I put the electric in my shop, I did it the same way I wired my kitchen. Even though I'm an amateur electrician, I knew enough about code requirements to run 2 circuits for the outlets and a SEPARATE circuit for the overhead lights. My kitchen is only 84 square feet, but it has 3 circuit breakers dedicated to it. My shop is only 200 square feet (I use tabletop equipment for watchmaking), but it has the same setup: 2 20 amp for outlets, with the lights on its own 15 amp circuit.
The idea is when you blow a circuit because of something you did on the bench, THE LIGHTS DON'T GO OUT. This is important in a kitchen or a shop since there are lots of dangerous things in a small area.