run TWO coax lines or even three.
Why? You never know. For me I have a dual tuner dish
receiver that takes two RG6sq coax cables from the dish on the roof. I also have basic analog cable. That means 3 coax. The cat5 is used for phone (Cat5 is not really needed but pretty much the ubiquitous choice now). Run 2 cat5 if you want phone and a wired LAN connection someday.
Also, when I was at home cheapo recently I saw this plastic box that mounts in the wall and has places to connect junction boxes. This will allow you to make all your connections behind a flat panel, in the wall.
I may even get the flat panel now so you can see where the connections go in and locate the wires accordingly.