I think you will find it to be a nice rig, but why risk ordering sight unseen and will very little information being that it is such a new model? Having said that, you made a nice choice to get the EcoBoost engine.
Does yours have the Li3 600ah lithium upgrade? If so, and with the 12v a/c rated at 20,000 btu's, it should cool very well. Perhaps for up to 2-4 hours on battery power alone.
Here's a link to the only youtube review I could find:
Here's another link to a Texas dealer who has some in stock. Call them like you're still shopping and see it anyone there can answer your questions.
EDIT: I just realized the Beyond is basically the re-named Crossfit, so not a truly new model. If your model has the latest insulation package, it should cool as well as any class b. Enjoy!