If you have vanilla paste, you can substitute 1 tsp for the vanilla bean seeds.
If you are pressed for time, cool the pie for 15-20 minutes on a wire rack, then set it in a pan of icewater, as high as you can get without touching the rim, and place in the refrigerator to cool. This will reduce the time needed to cool the pie by about half. (Or, make the pie a day ahead, and save yourself some stress!)