I have a Gunnar Sport which I've put about 30,000 miles on. It does well on rough roads but I wouldn't call it "plush". I use 23mm tires and 36 spoke wheels.
The frame has long chainstays and eyelets for a rack and weighs about 4 pounds. Many carbon frames weigh 2 pounds or less, so it will build a couple pounds heavier than one of them.