Videography

Hello everyone my buddy asked me to help him record a series of interview like videos.

I have a sony a7riii and am looking for a basic setup to record audio, preferably in a way where editing is pretty simple if i can feed the audio into the camera.

I'm thinking maybe a rode shotgun mic mounted on the hotshoe might be good enough.

The idea was going to be a room with a whiteboard and someone talking and explaining stuff.

Maybe just a small recorder like a zoom h1 placed closer to the speaker on a mini tripod would be better?