David,
Go to the Hilton folder and read the GOLD/50000 points bonus thread. If you can arrange 4 stays by 2/28/2001 you can get 50000 more Hilton points and Gold status. With this and your current balance you have 100,000 and that is 5 or 6 nights at Hilton in Hawaii, either the big island or Waikiki. For the air you need to get to 70,000 in a single account to fly together in economy. If Amex gets you 20000 in UA or US then you are almost there. The interisland flights are indeed 5000 miles each roundtrip, i believe with AA and others so you should be able to get a couple of those as well. I am sure there will be other good suggestions as well, I just wanted to make you aware quickly of the Hilton offer because it's a great one and the Waikaloa property on the big island is great for a honeymoon...Good luck!