Can you explain that a little more? Are you looking for something that moves side to side or ???
Yes, you can get outdoor rated coax if needed. However, your standard coax should be fine mounted outside along the building. But if your going to burry the cable, you either need direct burial or some conduit to run the cable in.
Depends what your customers needs are. You can get remote access from both a standalone and PC based, that is pretty standard now. You'll save money with a standalone unit vs. a PC based solution.
As for the tools and such, you can get mose your coax stripping/cutting tool needs from Radio Shack or better yet, go to a local electrical supply store.
thanks for helping