If you are landing at 2:30 on a weekday, by the time you land, get over to baggage pick-up area, etc. it will be close to 3:30. Add in the time to get your rental car....well, you will be right in the middle of prime time rush hour.
Yes, what they said. There is NO WAY you're going to make a 4:00 event at Aulani with a flight that lands at 2:35. Let's even be generous and say your flight arrives a full hour early, your bags are the first off the carousel, you walk right out to find a rental car bus waiting for you, getting your car is seamless, and rush hour is mysteriously easy that day. Still count on two hours from touchdown to check-in. And then it's not like you're going to sprint to your room, dump your luggage on the floor and rush back to the lobby for a tour.
My advice is to put yourself mentally on "Hawaii time" before you even leave home. Enjoy first class, take your time getting to the resort, enjoy the atmosphere as you arrive (and a glass of pineapple water), let the bellman fill you in on the walk to your room, take some time to unpack and explore your room, and simply unwind. Take the tour another day.