For a task that is estimated to be so dangerous and so world changing would it not behoove SIAI to be the first to make FAI?

That's my end of the problem.

Also if FAI is the primary goal here then it seems to me that one should be looking not at LessWrong but at gathering people from places like Google, Intel, IBM, and DARPA

Not nearly high-end enough. International Math Olympiad, programming olympiads, young superstars of other types, older superstars with experience, and as much diversity of genius as I can manage to pack into a very small group. The professional skills I need don't exist, and so I look for proof of relevant talent and learning rate.

Most people who consider this problem do not realize the degree to which it is sheerly impossible to put up a job ad for the skills you need. LW itself is probably as close as it gets.