Matt, I would hold off on using Tomato on those Linksys routers. The 5Ghz network drops after a few days to a week and needs a reboot to come back. I don't know if this is a Shibby issue or if it impacts other Tomato builds.

For now I've put the two frequencies on different SSIDs so that I can at least connect. If the were on the same SSID my laptop would fail to connect, as if it was trying to connect to the 5Ghz but not gracefully failing back to the 2.4Ghz. At least with them on separate SSIDs it doesn't see the failed 5Ghz, and connects to the 2.4Ghz.

Not an important issue for me to solve right now, as I got the new router to give the old one to my FiL, as the router functionality (or at least the DHCP part of it) in his all in one cable modem/router is crappy. But I was not successful in getting it into Bridged Mode, so he'll just continue rebooting it every few days for now