You also might try the Panasonic G7. It's basically a baby version of the GH4 with the same sensor and 4K capabilities, and would be an excellent starter camera for a film student - especially if you're already leaning towards the Panasonic end of the world.
Adorama has them for about $800 with a kit lens (14-42mm f/3.5-5.6), and they're running a special where you get a $250 on-camera short-range shotgun mic for free. It's a steal and a great starting place for where it sounds like you're at.
Extremely cool test, and I could definitely see uses for it.
When I read the thread topic, I honestly didn't think much of it, but the pupil dilation really changes the subtext of the shot. Thanks for sharing!