You don’t have to get up stupid early to catch a glimpse of Mauna Kea from Haleakal? on Maui, about 80 miles away. My suggestion is to go up when the gate opens (usually 7am for those without a early morning lottery permit thingy) and you will have more time to yourself up there.
I have done both the sunrise thing and the after and prefer the after. Temps start to warm up and the crowds are clearing out.
