Hey, want to connect two friends' houses together for gaming.(Pretoria, South Africa). About 250m, apart. What WiFi standard hardware should we be looking at? 5.8 ghz 802.11a was named by someone earlier because there is too much interference on 2.4ghz. We're trying to keep it as cheap as possible but still have good speed and latency for gaming. We're thinking about using standard PCI WiFi cards and directional grid antennas. Can anyone advise, give tips, etc?