I Have Better Cities 4.8.3
Better Cities Permanent Resources 4.7.0
Better Cities Resources 4.8.0
Do I need all three or can I get rid of one of them?
You need each file listed on Nexus as a "Main" file with the word "REQUIRED" printed underneath.
Currently, this is three files, and as ShinRA88 said, you don't have the latest BC Resources 4.8.1 archive, so get that and drop BC Resources 4.8.0
What is the label attached to the map marker you are Fast Travelling to when you get inside a wall?
That floating skeleton is a known issue with Better Cities, and comes from Warcry. There is an esp floating around to disable it, but I think it is a waste of an esp slot to add a mod for that. I don't think the BBC team has any plans to do anything about it, and I think it adds a quirk to the game.
Actually I consider it a known issue with Warcry, not with Better Cities, since Warcry adds that skeleton into the game and I think that skeleton is stupid. Stand in front of it, open the console, click on the skeleton and "disable" it. Close console, problem resolved!