Looks like an awesome project. Here's a few suggestions from when I built mine:
(1) Run an extra (empty) chase line or two from the main house to shop. Helpful if you need to ever add something. I added solar to the back of my garage and it made it easy.
(2) Run a big mini-split unit. It's great to have heat and A/C. Not sure where you are, but the AC really helps cut the humidity in the summer and remove any condensation on the floor/cars.
(3) Hard line your Air to each wall. I went with RapidAir 3/4". With a real on each wall it made it easy for accessing it anywhere.
(4) Lighting is huge. I found a guy on garagejournal forum who did lighting design for a few hundred $. Best money I spent on the project. He gave me an entire map, what to buy, and where to place it. Simple.
(5) Internet. I was more than 300' so I ran fiber optic line with a simple data converter on each end. This allowed me to be on the home network without issue and add a few 4K cams to the inside/outside of the building. Also allowed me to connect to the home Sonos network for easy music.
(6) Flooring. Went with Tile. Been fantastic. No issues for last 6 yrs. Did a redguard layer, I set them all myself to make sure no air pockets in the mortar ,and used epoxy grout. Just align the cement stress cut lines with the grout line and good to go. In hindsight it would have been easier to mark the lines on the wall, lay the tile, then go with a cutter and cut the joint lines. I did it the hard way and cut all the tiles.
(7) Painting/Mess. Not sure if you do any bodywork or painting, but getting a cheap $1K inflatable paint booth that you can setup inside the shop is a huge clean up saver.