Interesting points.
I am indeed looking at the project from an aircraft level perspective and the reason for the study is actually alligned with an integrated wing approach to optimally packaging systems to lead to higher efficiencies. Its a little bit beyond me to be honest and not really my area of interest but useful nonetheless.
I am in possession of the Eaton spec for the A330/40 Boost pump, was useful but did give me everything - which is why i posted in the first place.