Choosing the right Swiss variant (over the board tournament)

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TheQuestionableMilkman

Hi there,
In search of some advice. I'm organising a small over the board unofficial tournament this Sunday. 16 players, 10+5, 8 rounds. I'm using the program Sevilla for pairing and results. So i have two questions considering that 6 people have an official rating, and 10 don't.

1. Should i include the ratings in the user profiles?
2. What is the best pairing system and (Swiss)variant to choose in this case? I now have Pairing system 'Swiss' (with FIDE mode on), and 'Dutch (Rating)' as Swiss variant (see image below), but i'm not sure if that makes sense.

All help is much appreciated.