A triple is never referred to as "compact". The Specialized frame seems to have a slight upslope to the top tube, but it's not as compact as, say, a Giant.

There's nothing wrong with the tri-cross and, quite honestly, I think you'd be better off saving $700 and get the sport model. It comes standard with lower (easier) gearing and has the same wheels. The only advantage of the comp model is the 10-speed 105 setup, but that's going to be more finicky with parts that need more adjustment and more regular replacement.

The capability to run fat tires is WAY more important than any of your concerns about being "compact". Get your bike shop to spend some time on a fitting and if it feels right, pull the trigger. It's a good bike and will take you anywhere short of serious off-roading and running with the fast group in your local road racing club.