I'll second the opinion that wireless is not for everything. Some of the phones OK, but not all of them.
For data it is much slower for consistant use, and absolutely useless for large file transfer where speed is required. Things like streaming video and mp3 audio is barely able to keep up in the higher quality bit rates.
On top of that, as more and more wireless devices are put on the market, they fill up whole frequencies eventually creating distortion. Then they start selling stuff for the next frequency, making the stuff for the other frequencies harder to find. So down the line you may find it a real treat to find stuff for the freq you are using if not completely obsolete.
On another note about security with wireless networks. Your signal and access to your network are able to be tapped from outside the home. You would be suprised at how easily they can be accessed with password generating programs. Do a search for "Wardriving". I have overheard kids sitting at a busstop once a few blocks away trading passwords and locations of networks they knew how to get into... What they do in them, I have no idea...
That said, only a sizable conduit will be future-proof. But spare that, 2-Cat 5E, 2-RG-6, & 2-fiber will get you through the next few decades IMO. You could even drop the fiber, and still be ok for some time to come.
