Of the three options you mention, the first is fine; leave the wires in the box, spliced.

The second, no good at all. Splices must be in an accessible box.

Third, also fine. You can certainly blank up the existing box and run new.

I prefer a fourth option; Leave the existing receptacle alone and run a new circuit to a new box. WHY do you need the existing one removed? 

What to do with old connections when moving outlet to dedicated circuit?
I am at a company with several departments, and has different projects, here is an example...

Marketing Department has a Website Update Project, a Bugs Project, and an Email campaign project. These projects need to have their own document libraries, task lists and discussion boards.

What woould be the most efficient way of doing this? Would I have to manually create different subsites and apps for each project?

Thanks
