PhantomEB,
Good suggestion for Bondsman on the surround sound. I did this in my garage as well. The less "stuff" on the walls in the way of utilities the more room for wall storage.
Bondsman, I think if I were you I would run the copper air lines on the outside of the drywall only because if you ever want to add drops or if you need to repair a leak it will be easier to do so. For as inexpensive as CAT5 and RG6QS cable is, I would run that to an outlet as well for a...
I am also a PE (Professional Engineer) and a 4" thick concrete slab is more than sufficient for a general purpose garage. I have poured two slabs (one 12 years ago and one 6 years ago) and they both have stood up fine. I used approximately 4" tamped #57 stone with a 6-mil vapor barrier and...