Tom- Personally, I can only extrapolate what switching the nines might entail. ( I think I only saw it once in reverse)Thinking out loud, the 8th and 9th would certainly make for great (stronger)finishers. And having those dunesland holes later, will certainly give the golfer a more satisfied(spiritual) feeling upon leaving. But, as I've noted before, most of the resort golfers, that I have surveyed, prefer the tree lined holes. It's my own theory, that the reason they think that, is mainly due to the reminder of their home course.
On the negative side, there ain't much, save for that opener on #10. The narrowness, and shot demands, are pretty high for an opener. (not that the par 5 current opener is a slouch) And, golfing the marvelous one shot 12th, as the third hole of the day, maybe too demanding.
The transition of styles between the two terrains, is so great, that getting that transition out of the way early, may be the right choice, designwise, allowing the golfer some chance at continuity, and the course to flow as the round progresses. Going in and out, and back into the forest again, would certainly test the ability to adapt, more than just the one time, as is current. However it, may take away from the flow of the entirety.
Is this a good thing? I'm don't feel qualified to answer. But the difference is likely very subtle.
Here's one: How about making the first the last?