I did something similar with my construction tools. I bought a new enclosed trailer downsized from a 16 foot to a 12 foot. I was doing alot of city jobs and the 16 was a pain to park.
I bought a nice veto bag and filled it with all my commonly used hand tools this bag comes out for every job. Then I made job specific hand boxes with the more speciality tools. Plumbing, electrical, siding and gutter, trim work, hardwood flooring, tile, drywall, painting, and concrete.
I used clear totes to hold a small inventory of spare parts. Once again organised by specific job. I also keep a legal pad on the wall so I can write down what I have used and track what I need to replace.
I build shelving to hold all the boxes and larger tools.
In the end I didn't really get rid of anything. It's just more consolodated and better organised.
Now when I'm punching out a job and the customer decided to add a light switch I can grab my electrical box and a switch from inventory. That's it, done. Before it was dig for 30 minutes trying to find parts than look through 10 boxes for my wire strippers and fish tape.
Maybe you can implement something similar.