Meteor M2-3 and M2-4, 80K or 72K?

Two part question, which mode should I use? And, if I set up SatDump like this, will it automatically try both and I'll be covered either way?

https://preview.redd.it/esxvnddgixge1.png?width=802&format=png&auto=webp&s=aab9b14bc0f25fd232dd552c2a9db06c785a54b3