WRT54G management tools? (Score 2, Interesting)

I have just receieved the go ahead to create a proof of concept mesh network with WRT54G routers for a small city. The initial phase will provide coverage for a .5KM radius in a downtown core. I am looking at using the DD-WRT firmware with WRT54GL units. If we can provide seamless roaming across this entire space, then we will try to expand and provide free roaming wifi VOIP. What I am asking the slashdot community is what sort of management tools have you used to monitor things like node bandwidth utilization, link integrity, rogue access point detection, signal to noise ratio, uptime, etc. I am looking at WIFI Manager from Manage Engine:

http://manageengine.adventnet.com/products/wifi-ma nager/index.html?tb/

Has anybody used this or other tools to monitor a larger scale deployment?