Though no one will probably ever read this because this is a few years past the original posting, I'm going to answer this anyway.
I own a Red Dragon, and the files are completely manageable. They are easy to store, easy to use, and I can edit them natively right on computer without changing a thing. I'm finishing up a feature documentary shot on a mixture of 5K and 6K footage, and it's all been done on my Mac Pro and Raid Drive. So... there you go.
A lighter camera is great for a lot of things. Drones, stabilizers, handheld, the lighter that you can get the camera, the happier you and your systems are going to be.
Thank you for your responses!
The IMDB link to our film is here: http://www.imdb.com/title/tt4828304/?ref_=fn_al_tt_1
And I could write my novel on the back of napkins I stole from the pizza joint down the street, but I won't because writing on a computer is easier, and sometimes that just helps. The right camera can make things so much easier when you don't have the budget and time to do everything right.
It's a point people forget, I feel. Just because you can shoot a movie on your iPhone doesn't mean its the best idea. There are a lot of challenges that come from trying to make that cinematic that you simply wouldn't have to deal with if you were using a real camera. The same rings true for DSLRs. On a production with a tight schedule, that can spell doom.
This post is rambling and done at 2:30 in the morning. I actually agree with Matt, but I also agree with Aaron. The two comments should be merged into one informative comment.