I'd pick the EF-S 17-55mm f/2.8 IS and the EF 70-200mm f/2.8L IS II. Only downside is the weight of the 70-200/2.8 for travel, and that's a major concern, the 70-200mm f/4L IS instead. But for portraits, I'd take the f/2.8 over the f/4 for the additional OOF blur.