I'm not a proponent of making any change to the routing. But, if there was one, and climaxing with the ocean holes was the desire, finishing on #6 would be the least obtrusive. Finishing on #5 is likely impossible, but that goofy house sure would make an awesome clubhouse. Starting with a short par five #7 that suckers the player into going for it, would be a negative as it relates to pace.
With respect for RTJ's routing, the course has a certain flow to it that does make a lot of sense. With the majority of the holes in the forest, getting use to the differences from the early dunes land holes to the forest with it's Swirling winds, elevation changes, green slopes etc. is the key to playing the course well, or, properly.