Thanks for the replies everyone. I think I'll try it out at 45 psi then, and if it's too stiff (correction, if my fiancé says it rides too stiff) then I'll air down a bit. Seems like plenty of people are running the same tire between 35-40psi with no issues.
I'm getting Bilstein 5100s front and back today too, so hopefully it doesn't ride too hard. Personally I'm fine with a more "truck-ish" ride, but of course I gotta stay within the acceptable range of the significant other haha.
Update: I'm at 35 psi now haha. 45 psi was too harsh after a couple of days but 35 is fine. Made it from ATL to Orlando and back with 4 adults and luggage with no complaints and no problems.