Can anyone answer these questions about Space Force?

That ought to confuse the crap out of people.

Lt Col Charlie Brown I like your idea about the rank structure. The Space Force enlisted personnel will be mostly "technicians" of various types. Like the other services, all Terra-based services will be contracted out so Space Force won't need people to mow grass, cook food, clean buildings, etc. They will need contracting officers and technicians, space operators, and space logisticians. My recommendation for enlisted ranks:
E-1 Space Recruit, "Recruit"
E-2 Apprentice, "Apprentice"
E-3 Technician "Technician" or "Tech"
E-4 Lead Technician "Lead"
E-5 Senior Lead Technician "Lead"
E-6 Supervisor "Supervisor" or "Supe"
E-7 Senior Supervisor "Supervisor" or "Supe"
E-8 Superintendent "Superintendent"
E-9 Chief Technician "Chief"
Officer Ranks would be the same as the Army, Air Force, and Marines (majority rules), but some titles might change. For example the whole "captain" thing could rear its head again in Space Force. What do you call the officer in charge of a space vehicle? Navy tradition would lead to calling her or him "captain" even if her or his rank is Major. The Navy almost solved this by making O-3 "Lieutenant" and O-6 "captain", a grade at which an officer should command something. Chioce is to not use "captain" as a job title and keep it for O-3 or to come up with new rank titles for O-1 thorugh O-3 to avoid the problem. I vote to refer to the person in charge of a space vehicle as "Commander". If you don't use "commander" for O-5 then the confusion is ended.

Uniform basic color is the same as the true color of space when seen from outside the Earth's atmosphere, black. The "NASA Blue" used in their flight suits could be used as the second color in unit patches, uniform decoration (stripes or piping), etc.

I like your reasoning