At your weight and anticipated usage, maybe you need to check out the catalogs from some of the better rim manufacturers and focus on the lightest weight rims they make.

The narrower 26 inch rims should work well with 1.5 to 1.75 inch tires. At this link, go down to the section on "Width Considerations" for discussion on rim width.
Tire Sizing Systems

I can't recommend a model because I use rims that are robust enough to carry twice the weight than you will use.

Have you posed your question to the forums for commuting or other users with lighter weight bikes? There are some light weight touring folk that look at this forum, but they are in the minority.