Yes but...

1) I would really recomend against doing that unless/until you have at least riden a good touring bike. Run don't walk to the Urbane Cyclist right downtown a few yards from City TV, take one of their touring bikes out for a ride. They make them up in a number of different formats but they should have one made up in most sizes, you might not get drops in every size, but close enough to test out the format. If you really don't like it, then I agree with all your other points and have fun, but at least do it from an informed basis. A lot of people after they ride a touring frame actually prefer them just for running around on. Disreagard if you have alaready done this...

2) You like this CC bike right now, but your whole world view will change on the road, your perception of what is hot and what is not, so be sure you are satisfying a durable desire... I'm not here to denigh you a CC bike, just so long as you are going to be happy with it on the road, and many people have, it's pretty close.

145 is a whole lot better weight to be coming at this from, but that still puts you at the upper limit of their tubing and you haven't taken on any weight. I'm certainly not suggesting you will break the bike! Just getting at how different a world this kind of thing is designed for, though some CC frames are real rugged and a lot of guys tour on the Surly CC. I'm just trying to give you a point of reference.

I do the ultralight thing too, but it still added up to about 35 pounds plus tarp, sleeping bag, food and water. I have all the lightweight gear, and I left behind all sorts of stuff like stove, only took a cup and a spoon, camera, ipod, etc... etc... I carried only minimal tools, and spares (and this bit me in the end when I left without the folding tire I wanted because I couldn't find one) I started with Ray Jardines packing list for backpacking out of 10 pounds gear + plus food, and yet it still added up. The trips I have done so far have just turned out to always have a big food store at least once a day, so I haven't had to carry multi day food.