I used the bracket that mounts the alternator above and compressor below on the driver's side. I bought it from Patrick Dykes and as I recall it was $100. Very good design, actually. The dual pulley is on the A/C compressor so you don't need an extra one for the balancer nor water pump. The compressor tightens the belt for the water pump and balancer and the alternator tightens its own belt from the compressor. Not much weight is added with it. You probably will need an alternator.
As for power steering, I think I might be tempted to just use one of the electric units such as the one used on the Ford Escape or the Toyota Tacoma. Evan Ritter liked those also and had used them in some applications. Some are not too expensive, and they were designed for heavier vehicles. As long as you get one that wasn't damaged in a wreck, you should be good.
If you add A/C and especially if you live in a city with slower moving traffic, I suggest an electric pusher fan in front of the condenser. A thermostatically controlled puller fan on the back side of the radiator, a good shroud, a smaller pusher on front of the condenser and a trinary switch so the pusher will be running anytime the A/C is on is a good scheme. As much air as possible moving across the condenser is the easiest way to get sharp cold air out of the evaporator. Otherwise at city speed my experience has been it can be stuffy in there.
