All good information here.
I'd also recommend checking the sidewall of your tires just to confirm they are rated to handle the pressure - they should be but it doesn't hurt to check.
I have a different tire/wheel size and setup so this is apples and oranges - but FWIW, I was running a lower pressure (6-8lbs low) in my Hankook V4s on factory 16s and I had awful handling issues in the rain. I talked with Dane and straightened myself out. Increasing the pressure closer to factory specs made all the difference in the world.
Have a safe drive! Congrats on the purchase! Take some pics on the road trip!