Thanks a lot for all of your help and advice.
I finally decided and ordered wheels - even better deal than for DTs, here is the spec:
2005 tune king (143gr) and kong (225gr), mavic x717 disc rims, DT Competition spokes, brass niples - should be strong reliable wheels (and light - you can call me whatever you like, but yes, I am a little bit of a weight weenie - trying to stay resonable).

I did also some extra research and here are the findings:
for light riders DT revos and alu niples should also hold, however when one niple dies, the wheel would never be as strong as it was, even after additional truing.
DT Aerolite are extremely good spokes, however 3 times as expensive as revos - for me it was too much
mavics 517 discs had a tendency to break due to vibrations coming from on-road riding and x717 corrected this issue
good tires - Tioga Red Phoenix kevlar (370 grams, 1,80) - I had enough of flats on my contis supersonics (every 50-80km I had a flat in the last two weeks)

Thanks again