Ron -
I had a similar problem long and narrow property. Definitly draw it all out and don't rely on the architect. Like others have said, plenty of electrical and a 220 near the door so you can run a welder or other 220 stuff out side. Also same for Air, when the framing is done, get in with the copper and put the air lines in (don't for get to slant for water collection).
Garage lighting is also important, I did the high output floresent (small tube) all over, then backed it up with some small 75w Metal Halide surface mounts that really give some good working light.
If you can go high celing height a parking lift helps with working on the tight space (good for snooping under the car too). Measure the stuff twice as you can squeeze them in, but add drywall, beams, etc might have a problem when you actuall get cars under and on them. Garage door opener, etc.
Also Video/Speakers/Networking/Phone all can be done before the walls are sealed up. Most you can do your self. Think also about your new wall mount LCD Tv so you can watch Rendezvous loud and undisturbed. I used a bunch of the Leviton modular jacks (Home depot has them) and pulled lots of extra wires.
If you are tight for $$ for and AC/Heater unit check out on Ebay some of the Surface mount Heat pump units. They are easy to mount up and can be added after the build.
I had to do a bunch of stuff after the drywall went on, so don't forget to take video or photo's before they do it so when you have to remember where the pipes/electrical, etc are could save a lot of time
It is a fun project lots of good stuff you can do in 'your' space as my wife calls it
Sandy