How many days would the Kalalau trip be?
Is there a draft of an itinerary somewhere here?
Depends on a lot of factors.
Just a possible itin though even just Kalalau would be good enough for me:
Sunday, arrive in LIH, start trail and camp at Hanakoa.
Monday, hike to Kalalau Beach and camp the night.
Tuesday, hire a boat to take us back to civilization. Fly to KOA, find a bootleg volcano tour to the current eruption.
Wednesday fly home? 4WD to Green Sands Beach, Waipio Valley, Mauna Kea 4WD routes, etc?
Might also be fun to take the 4WD road in Waimea to look down to Kalalau.