I have last year's model of the K2 Enemy, the bike you mentioned in your post, and until a month ago had a modern touring bike. I may tour on the Enemy this summer, but the touring bike would be waaaaay better suited. For one, the Enemy doesn't have rack eyelts on the seatstays. There are ways around that, but still, it's a pain. Also, forget about a front load.

Also, the low gear is 38 x 25. It's 9 speed Tiagra, so I will probably put on a mountain rear derailleur and wide range cassette, but this is not an option with 10 speed drivetrains.

So a cyclocross bike can work, but I'd avoid the ones that are more race oriented. A good option would be the Tricross Sport Triple. In fact that would be a great option, but I tend to think that the Tricross line is overpriced. The best bikeor your pruposes--fast road riding and touring--would be the Salsa Casseroll triple. It may be stretching your budget bby a couple hundred dollars, but I have a feeling it's perfect for you--much better than a race oriented cyclocross bike.