Since it's an adults-only trip, treating yourself to a deluxe would be soooooo worth it! I don't know if you have kids or not, but to me AKL seems pretty adult -- and it's a bit farther from the parks than some of the other resorts -- so this would be a perfect opportunity to try it out! Dh and I went on a 2nd honeymoon without our kids last year, and I really wanted to try AKL. I got such a great deal renting points from a DVC owner, however, that we ended up staying at BCV -- and were THRILLED with that resort as well. All in all, I think that if you can get a rate that's affordable, this is a great opportunity for you to try something new.
Happy planning,
Sarah