Thank you both for responding to my query post.
I will drop down to a 3 lb netbook (w/charger) and will be traveling in warmer weather so I do plan to reduce my packed weight considerably. On the other hand the route will include ACA Western Express so I expect to need to carry a lot of water (at times) and more parts/tools than my previous experience.
Yeah water can add up quickly and it isn't optional.
Before you start be sure about daily mileages and destinations since the WE is pretty remote. I have not ridden it but I bet Credit Card touring will be a real challenge due to the distance between services. It looked like it would be a challenge on the TA and the Western Express is reportedly much more remote. I know that even on the TA there were some pretty long sections with nothing in the way of services. I think there was one place where we were 80 miles between water stops. The WE would probably be much worse.