TomatoUSB

I've currently got 2x WRT54G routers running tomato and have been happy with the setup for the last 4-5 years. But it is time to upgrade.
What I'm wanting to know is, if I get say a couple of the Cisco E3000 devices which are duel band.
Does TomatoUSB allow the different bands to have different functions.

Basically what I'm wanting to do is have the 5Ghz band bridging the 2 devices wirelessly and then have the wifi broadcasting from the second router on the 2.4Ghz band. The main router will be connected to the modem.
I'm contemplating either getting 2 of the E3000 devices or 1 E3000 and 1 E2000.

My current setup has the 2 WRT54G routers connected wirelessly using WDS+AP (basically bridging and broadcasting wireless network at the same time with the same SSID, appearing as one network).