Keep in mind that for the c700p it only supports a 360mm radiator top with the optical bay removed. Given how the internals are pretty much the same with the c700m, I'm guessing a c700m won't fit a 360mm top either with the optical bay.
You can apparently move the top radiator mount down to the bottom which should theoretically allow for a 420mm rad bottom and a 360mm in the front provided they're not in each others way.
Here's a couple pics of a c700p build I found with radiators front and bottom.
https://ibb.co/ianNq6
https://ibb.co/eRkmHm
