Have a WL500gP and having the problem that in our house the 2,4GHz band is quite overpopulated by other networks.

Came to the idea to attach an external USB WLAN card like the Trendnet TEW-684UB which offers abgn and 450MBit speed and use it to create an AP in the 5GHz band via the WL500gP.

Did someone ever try this? Can someone recommend a card that works and where a driver is available for MIPS/Linux?