**Ok, to summarize my recommendations (and again no pressure)
- I would spend a day in Poipu, getting massages, exploring the coast, and having a coctail at the Hyatt for happy hour. You can also squeeze snorkling in today at Lawa'i Beach.
- I would spend a day in the North centered around Queen's Bath. Be sure to figure out which day would be best for tide and easy parking before you decide the rest of the trip. While up here visit the small town of Hanalei, and Hanelei Beach. You can have dinner up here too.
- You've got to see the Na Pali Coast. The best way is by Helicopter. The second best way is by boat. The third best way is to drive. You don't have to do all three. However, if you do the boat then you won't be able to see Waimea Canyon. That said, if you do the boat, you may be able to squeeze in a drive to Waimea Canyon earlier in the day, or after you get back from the boat ride (depending on when the boat ride is and how long it is). You can have shaved ice (at Jo Jo's) and BBQ (at the Fish and Hog) in the town of Waimea. I can see a scenario where you do the boat one day and do Waimea Canyon and the Kalaulau lookout drive a different day (but I'd say just do both in one day, or just one in one day and save the other day for random other adventures like the train and more snorkeling).**