I just did this today and it was unreal. Definitely get there right when they open 1) not as hot and 2) you have a bit more solitude. Around 10 mins into the hike I realized that I could take my shoes off and jeez it made things a ton easier and way more comfortable. I brought like a half gallon of water and didn't even touch it until after the halfway point, however I don't think I would've brought any less considering how hot the sun got towards the end. Really makes you feel like you're the only one out in the desert, don't let the short distance fool you.