It seems like a no brainer.
Given that you can get a 150Mbps Wireless N usb dongle for $4, just buying the IC should be crazy cheap: http://www.aliexpress.com/item/150Mbps-USB-Wireless-Adapter-...
There are other single board compuers with WiFi built in, you don't have to wait for a new Raspberry Pi.
http://linuxgizmos.com/ringing-in-2015-with-40-linux-friendl...
It seems like a no brainer.
Given that you can get a 150Mbps Wireless N usb dongle for $4, just buying the IC should be crazy cheap: http://www.aliexpress.com/item/150Mbps-USB-Wireless-Adapter-...