I've only used the Production 4k camera so I'll give you my 2 cents there. It's a great camera, and with Raw you can get some awesome imagery out of it. We rented a EF lens set when we got it, but we now have that Rokinon set for day to day use.
If you've got the budget I don't see why you'd not get the Production 4k as it can do 1080p if you don't need 4k.
Also I'd recommend getting a external monitor, as the built in screen is pretty useless outside and I felt the color on it wasn't very accurate.
Hope this helps!