Thanks everyone.
As far as lenses, I'm using all EF canon: 24-70mm/2.8 , 70-200mm/2.8, and 17-40mm/4.
I think I may have to stick with 1080p as 4k is really not needed at the moment for this project and it might give me some more affordable options. The RP or C100 might be good enough since they are pretty decently priced.
I wouldn't have thought about the C100, that seems like a good fit.