52x16prod

Hi there,   Using eos 5D III magic lantern firmware for RAW recording and audio external recorder Zoom H4n for a short movie. How can I easily playback the recording on set to check the files (both video and audio) ?   If I use an external recorder such as Atomos Ninja, can I playback the h.264 recording with sound ? Does 5D record both video and sound ? If 5D records h.264 proxy and sound, does it affect RAW recordings quality ? Can I playback h.264 recorded to Ninja with sound recorded to H4n ? If I use mics such as sennheiser ew 100 G3I, is it possible to record audio directly in Ninja (with receivers) so I can check-review video and sound together on set ?   Thanks for your answers