I will try to give an honest opinion and maybe to try and assess levels of difficulty here.
I think really difficult and almost near impossible certainly if you are in a bigger market. If you are in a smaller, you might be able to swing it if you can find a network that would be willing to go with you for your startup. You have to think though in smaller markets (hmm Beaumont for example), the NBC affiliate is a digital subchannel of KBMT.
Depending on how much automation and how much contracting out of services are you willing to do you can run it on paper thin people wise. But by one person, nope. Maybe one person per department in a smaller market. Remember though your sales team will need a few people and also your news team will have to have maybe 10 people unless you contract it out to like what INN used to be. You could do that and have them provide the anchor/weather/sports and then maybe have two or three MMJs
Depending on affiliation yes. Plus Master Control and a lot of other functions could be contracted out. Granite broadcasting in its dying days did that by going to a group in Atlanta that did MC functions for their stations.
Depending on the sales team you have in place, this might be something way easier to do. Also depending on the market and depending on affiliation
Depending on what they say, could be very easy to get the approval. You might though have to start as a LP (Low Power) station to get off the ground.
Admittedly that would probably be one of the last things.
Here is the reality. The last big station to have started from scratch was at the time Raycom's only station they had ever built and that was WMBF in 2007-2008. They made sacrifices including going all digital since the deadline was in 2009 for everyone to go digital. But they also had resources. What will this perceived stations resources be in terms of pockets. I would say to get a TV station off the ground in a smaller market might be a few million dollars and that is to get all the necessary engineering equipment and everything else to get the station up and running and then to be able to maintain the station. And if you are in a bigger market, it would literally be way easier to buy a pre-existing station and just making it yours instead of going from scratch.
Hope this helps