I think, with respect, that you are trying to cross your bridges before you come to them. Wait and see exactly what comes, check the box contents against the packing list and go from there.
I think the router has 4 ethernet ports, plus USB and power. It should come with an A/C adapter, USB cable and a cable to connect the router to the telephone point. This cable can be up to 60 feet long, so you shouldn't have a problem.