I'd go with Zeiss 24/2, 85/1.4, 135/1.8 and the a900 or its successor. In order to have a backup, I'd opt for the 35/2 on the Fuji x100. (I would also try to finagle a way not to swap out any of the Zeiss lenses for the Fuji, however, so I guess I'm not that much of a minimalist quite yet.)
There are only two problems: the x100's not out yet and it'd take a lot of work at the gym before I'd be up to carrying the Sony/Zeiss combo around all day!
So, for the time being, I do plan to just start with the x100 (absent horrible glitches) and then, if I need to, just rent the Sony for short term use with my lovely Minolta 35/2 and 85/1.4 glass.
Finally, while I do believe that it's easier to develop muscle memory and intuitive photography by limiting one's tools for at least a while, I also think Ben's really wise to say, "You choose what you want to achieve not that you let your minimalism choose the type of photography you can achieve."
HCB and others, of course, found no contradiction between Ben's terms, but let them merge with spectacular results!