We really like both places. 'Ohana and Kona are very different as far as menu, crowd level, activities during the meal etc etc., so even if you do both, it's two different experiences. WC is a lot of fun too. There have been some negative reviews, but we really like WC - the food is OK, and if the wait staff are in a good mood, they're fairly entertaining. Plus, the Lodge is great place to visit.
I would say make room on your itinerary to go to all three restaurants!