[MENTION=766662]PsiFighter37[/MENTION] I think Hawaii, as a whole, is a bit lacking in luxury hotels or I should say, the luxury hotels in Hawaii feels dated. Many are still large developments or high rise buildings.
That said, FS Lanai is probably my favorite in Hawaii. It feels so much different/better than most options in Hawaii. I found the food to be fairly good as well. I really would only want to visit FS Lanai, FS Hualalai or Montage Maui. Otherwise, I'd just skip Hawaii as a whole. But obviously, this is a very subjective view.
Good news is that if you're interested in visiting Lanai then the decision is easy as FS is the only option (as pointed out above).
If you guys are active, then definitely take advantage of the FSPP Promotion of Lanai Explorer, which provides unlimited activities.
Otherwise, there's a FSPP 5th night free promotion as well. Definitely book your trip through a Four Seasons Preferred Partner Advisor to get the best promotion and upgrades. I'm a FSPP Advisor so obviously a bit bias

But it really is the best route to go for FS stays. There are many great FSPP Advisors on FT, and all should be able to look after you well!
For connecting to Lanai, I'd highly recommend taking their chartered plane for only $500 per couple, each way. That's a great deal and experience!
Funny enough, I'm planning to take my wife back to FS Lanai, second week of July and I'm stoked about the chartered plane. Wasn't available yet 2 years ago when I visited. Makes the connecting flight from/to HNL/OGG so much better.
Anyway, I think you guys would have a great time here, enjoy!!