A friend here has that same exact bike -- a Specialized Secteur. I was quite skeptical last year when told me he was using it for a 3-day tour. So, he installed a rear rack and went on a 3-day credit card tour with another friend. They ate in restaurants, convenience stores and spent the nights in hotels, hence the idea of "credit card" touring. As far as main accessories, he installed a rear rack, one of those Topeak trunk bags and a Brooks saddle. His bike ended up looking like the one on the pic below. Upon his return, he said the bike performed well. As someone mentioned, you'll need to be watchful of the weight when packing.

If you're still in the market and foresee doing several tours (w/ heavier loads), I would suggest looking for a more suitable touring bike. But if your preference is for livelier rides most of the time and simply install a rack for one or two short light tours a year, I think that bike shouldn't disappoint. YMMV.