How realistic is it getting a wired phone into your place? Check with the phone company about where the closest loops are and what it will cost to run a wired phone in there. With wired phone lines declining every year by millions it will not be much longer before they are not supported. Realize in telephony terms not much longer means 10-20 years, the industry moves slowly.

Have you looked into internet service in the area? By me the only service that is decent is 3G wireless (so to be 4G) offered by Verizon.

I am assuming all of your ethernet cable will be homerun from a router, have you looked into the router you are planning on using?