Thanks for the advice mate. Yes i think Chateau will be second on my hit list after CDM (I think the extra attack % and FP will always be welcome).
I get the DT for lower age goods, but most high points players don't seem to have one, or not have it at a high level anyway. I get once Chateau is high enough the recurring quests provides enough goods to not need goods buildings. But i don't understand how they get enough AF goods to negotiate level 4 of GE (if needed) and research techs (when VF comes out, or when OF parts were being released).