You have more than enough to see a good chunk of the world. Choose places that most appeal to you. Do you like mountains or beaches? Do you like history or enjoy religious complexes? Do you like active lifestyle (hiking) or prefer relaxation (spas)? Everybody has different tastes so it's difficult to answer such broad question.
My suggestion isn't as amazing as some of yours but I really must recommend that you visit Erakor Island in Vanuatu. If you have never heard of Vanuatu I suggest you Google it