Agree with @carlsbad in that I would be disappointed if I couldn't put together a satisfying system sans subs for 100k.
Having said that bump the speaker number as an exercise and see what you find, doesn't mean you have to spend it. Speakers are número uno in my book.
I have to ask: Seems like you're in a rush to go forward with this upgrade...
wouldn't it be wiser to get to your new digs prior to any purchasing?
Regards,
barts