How much do you think it would cost to drywall your garage? When I looked at the material cost...it seemed quite...cheap. Which leads me to believe that might I'm missing something.
Drywall is pretty straightforward, and is made easier by a drywall lift that can be rented, to save your back.
My garage was already drywalled when we moved in, and putting in electrical circuits and air plumbing is much more of a problem. In your case, you are actually ahead of the game right now. You can plan electrical, air plumbing, lighting, and insulation before drywalling (if I've understood you correctly). If your garage is attached, fire retardant/resistant drywall is really the way to go. You'll likely sleep better at night.
If you want air, go with an oiled unit, as the noise is much less and if you need large volumes for a media cabinet or painting, you will need a two-stage unit putting out 18 SCFM or greater. Those are permanent installations and 220 volt units hardwired into your electrical panel. I'm going to be using RapidAir for the plumbing as it's neat and easy to change with changing needs. It's a bit more expensive, but worth it in the end, in my view.
Before drywalling, also consider a mini-split AC/Heat Pump, which will allow you to work year-round in relative comfort. The great thing about these efficient units is that they also control humidity, which is great for our cars as well as workshop consumables like sand paper. You have the luxury of easily insulating the garage, as well.
Once all the prep is done, then you can drywall, and you can end up with a beautiful and clean area that you can actually work in as well.
I made the mistake of thinking of systems rather than sitting down and planning on how all this would work together. You have the advantage of being able to do this now before you cover up the walls/ceiling with drywall.
Good luck with your dream,