My recent blogpost was a theoretical approach using Ekahau ESS to find out if its possible to use Cisco WLCs TPC algorithm to set Tx-power on my access point according my predictive design in ESS
My design was based on Cisco 2802i access points, primary/secondary coverage -67dBm/-75dBm, Tx-power at 25mW/14dBm and 5GHz only
My conclusion from the theoretical approach was that the WLC would have problems with a consistent Tx-power setting. But I would give it a try