Assuming there are no obstructions between the two points (I.e clear fresnel zone) … this shot can easily be done with two xr5’s connected to 32.5 (3ft) dishes.
Expected rssi will be ~-58. - This will yeild a 54meg pipe.
It would also be best to use the nstreme protocol in this case as the ack timeout at such distances would hinder 802.11a/b/g’s performance.
It would great if you can provide a google earth screenshot or lat lon. to further clarify things.