Help Me Plan Out the New & Improved Shop

You need plumbing. It is not that expensive. A toilet/sink will save you tons of time each week. Are you on a septic tank or sewer? How nosey are the inspection people in your city/county? Plumbing can be added near the wall with very little slab work, and if done in the cracked area, that can be repaired as part of the process.

If that is still expensive base on your total plans, deck the floor up for a bathroom area and all the plumbing can be above the slab, exiting through the wall. Do this on the side that is closest to your septic/sewer line.

Instead of shelving, wire rack shelves and cabinets.