the 5th May event
There is a page for that since May the First. Including the "tipp" how to get the outfits. There is no better way of guessing the values, because they are random for each player.

There is or was (do not know) a way of shortening the times to film them, if you start filming and then reset. But this will gain you next to nothing. You film your girls anyway and you do still need to film them to the end to actually get the outfit and you can only film girls you have completely unlocked, so if you take two weeks to complete your highest girl, speeding it up by doing a reset is ... moot.