Road Cycling - light and durable vs stupid light parts

As I continue to ponder on what components to pick for my next ww bike, I realize most of the very light parts I want to use I've never had any experience with. So, I get to the question of:

Do I want to get all these extremely light parts only for them to break up or not hold up to time? or, do I want to get parts that are very durable and proven but not the lightest?

For example, I am considering the Ritchey WCS carbon seat post, fork, stem, and bars. Seem very light, but certainly no the lightest. Are they considered very durable and strong? Again, I have no experience with Ritchey stuff. I am also considering Zipp 303 or 404 tubulars, but have the same questions..

Ultimately, this is for a daily rider that is very easy on equipment, does plenty of preventive maintenance, is right under 200Lb, does hardly any climbing, non-aggressive ridding style, and no racing whatsoever.

Any suggestions??

If you're up near 200 lbs, durability is a very important factor, even if you are not an aggressive rider. I'd go with Thomson instead of Ritchey CF, especially for the seatpost.

Ultimately, this is for a daily rider that is very easy on equipment, does plenty of preventive maintenance, is right under 200Lb, does hardly any climbing, non-aggressive ridding style, and no racing whatsoever.

Any suggestions??Since this is the kind of riding you're going to be doing, I definitely wouldn't put on Zipps. Especially Zipp tubulars. They're definitely light and I've heard they're durable, but you can get very durable wheels for 1/5 the price. And tubular tires are a much more expensive proposition overall. Get clinchers.

For the kind of riding you're planning to be doing, light weight shouldn't be an important consideration.

If you want Ritchey, get the Pro Carbon fork, WCS carbon post, and aluminum everything else. With wheels, get the Fulcrum Racing 3's with good tires.