I just hit 150 mi on my new CX Uno. Bars were one of the first things I changed (switched to a narrower Deda compact) and shortened the stem from 130mm to 110mm. I have the 54cm frame and at 5'7" (with a short torso) I might have had a slightly better out-of-the-box fit on a size smaller.
I too had to replace the stock brake levers. I saw a couple of reviews that said the stock levers were uncomfortable, but I figured "how bad can they be?" The answer, it turns out, is that they are remarkably bad. I couldn't ride the stock hoods for more than a couple miles without feeling that the levers were attempting to sever my thumbs.