Just a thought - what exactly does using adhoc buy us here? I imagine that our extender nodes will likely be either pt->pt or pt->multipoint, each of which would be supported by an AP->Station mode. I guess that it might be slightly more convenient to just throw extender nodes into adhoc and not worry about them, but generally we'll have to select channels anyhow, so is it much harder just to choose station or AP mode?
If we were to abandon adhoc mode, can we use WDS in order to bridge extender nodes?