That number seems high.
To clarify where I'm coming from, 2117 assumes 27.2 second dispatch intervals (of two vehicles) relative to the 33.9 second dispatch interval that would get you to 1700 per hour. Also of note, the final pre-show in the interrogation room is 55 seconds between Hux appearing on screen and the door opening. Because there are four of these interrogation rooms, that means each of the four dispatch rooms must dispatch every 108.8 seconds. This leaves less than 55 seconds to load into the pre-show room, unload the pre-show room, board the vehicle and do a safety check. The 1700 guest per hour capacity allows for 80 seconds for all of that.
Another bottleneck would be the Kylo/Hux scene. This scene from doors open to doors close is almost 30 seconds exactly. As far as I know there aren't two versions of this scene (just two paths to get to it), so even if vehicles were dispatching at 27.2 seconds, they would have to be held and would ultimately cascade ahead of this scene. It's possible multiple vehicles can be in this space at the same time (one just entering, one just exiting), but 27.2 still seems too tight.
I see the attraction probably falling in the 1500-1600 range which is way too low. It's better than Flight of Passage, but still too low.
This is a similar argument that was made for Flight of Passage's capacity theoretically being much higher. Theme parks don't operate in a theoretical world, they operate in the real world. I knew on October 24, 2012 that Flight of Passage's capacity was going to be on par with Soarin' with two theaters assuming an 8 minute cycle time. They should have built one or two additional theaters.