Is there a point to this? You ask a question, a member takes the time to answer it and then you say essentially, "Yeah, what ever". Very odd behavior it seems to me.
Maybe we aren't answering the question you think you are asking. Your questions are not very clear, for instance:
First this is clearly this is not a star system like ours. The other problem is that your isosceles right triangle will only exist for a moment in time since the objects will be orbiting a common center of gravity.
Where is the observer located? By "down" do you mean the barycenter?
No, it is not possible to answer without defining down, specifying the observers location and specifying the size of the 'gravity wells'. Of course this pyramid arrangement would also only occur for a moment in time.