You can get combo wall plates that have RJ45, Phone, Cable and speaker at an electronic store, this way you'll never have to worry about one or the other.
I didn't have time to do it to my house when I built it. But wish I would have.
Also make sure you put your phone connections on a bus strip in the basement instead of series connecting them. This way if you have trouble with one you can replace it and all others will be acvtive, the other way if one goes all connections after the one that goes will be dead. Take it from experience.
Another thing to really think about is getting a Main GFI installed in you house electrical service at the main panel, this way you'll never have to worry about your electronic stuff and water shock, as your whole house will be protected.