I have an existing G network and devices that are only a/b/g capable, but I'm looking to put in an N network. I've read that if you put N into compatability mode you get significant performance reductions. can I run both a 5GHz N signal from a new router and the 2.4GHz G signal from my existing G router without problems? both would be acting as AP/switches, as my main gateway/firewall/DHCP is another device. Hopefully so, as the N device would be on the edge of an existing gigabit ethernet network, and I would like to eliminate as many bottlenecks as possible.