you must be loaded or like giving BMW a sales bump
. I would get the PPK installed (and possible some of the external M Performance items) and keep the car for 1 / 1/2 years and buy the 335d LCI as it is not that far away and will be faster than the current 335d as BMW always upgrade the power output.
in day to do driving the difference between the 330 PPK and the 335d will not be noticeable IMO. and TBH very difficult to distinguish when pushing it hard. If your are after a night and day power increase you would be needing something like the new M3 / M4.