[Hehe]

As Presto said, get someone to lay down some good CAT and you should be good to go.

The cost might be slightly higher at the beginning, but at the rate ISPs are robbing us, it should make up the difference in no time.

On an alternative route, you could get a good set of outdoor WiFi repeater. Amped makes one (up to 1.5miles in open field) and I have heard many great words about it. Might be worth it to look into it.

The sorta nice thing about Amped setup is that it actually creates a new Wifi network that piggyback onto your current WiFi setup. It might make sense given you'd be sharing the internet access to your renter, but not actually sharing the network access.