Ghostknight, I would like to join your game. This is mostly because I am fairly familiar with the WotC modules doghead is apparently using. I also like a little more in depth RP, which you seem to be shooting for.
As far as setting style goes, #1 and #5 sound like the best options to me. I would be more than happy with any of the five you listed though. Large scale powerplays between houses sounds very intriguing to participate in, even if as lowly first level PCs we are merely pawns.
Regarding character creation, what requirements are you setting down? Core materials + the playtest SRD? This is what I am assuming, but just confirming. How many points will you allow to buy stats with?
thanks,
tm_supreme