Assuming that giant dynamic link works. 8 preamps, gives you 8 channels recorded into your editing software. Whoever is editing and mixing this should put in hours of practice, mixing 8 channels of speech is no joke.
Don't use a mixer, you aren't mixing on the way in. You're tracking, and that's a very different thing.
You should get monitoring speakers too. Something like this. Compact and fairly cheap. So you can hear what you're mixing when you mix and edit everything.