I support the blackout, but im also kinda annoyed because tons of Warframe information are in reddit posts.
It was easy Natah for me. She was never Margulis. Lotus was manufactured false persona. Natah is who she was born to be. Natah might also please grandaddy Hunhow.
Breach Surge for funny numbers, or Tharros Strike for armor / shield strip + healing Atlas so rubbles wont go waste.
Always "build" with mods you have. Just dont stress about it. In early game its good idea try to farm different missions to get all basic mod you can and go with your own pace.
Basically you are spreading way more statuses than you realize. Normal weapon usually have 4 to 5 different statuses, but it also counts stuff like: disarm, knockdown, lifted, silence...
Pretty sure ots same chance to get rare container with forma, than in Void missions. Zariman maps just have inbuilt rare finder.