I know that somebody thinks the first way, although I personally think the second way. Another concern is that in the worse case scenario, if, I mean if, the 140 was not approved, then the 485 fee would be wasted, if filed together. However, if you could know for sure that the 140 is approved after the 15 days, then your 485 fee will not be wasted. But of course, if you are very confident, and you want to save these 15 days, 140+PP+485 is the fastest way.