Welcome! I'm in a similar situation as I'm Canadian and my partner is Aussie, so Hawaii seemed like the perfect meeting point for our guests. The first thing I would suggest is to decide which island would suits what you guys want to do while you're there (I think we'll be in Maui since it has great beaches, snorkelling, surfing and seemingly nicer out of the way spots then Oahu), and if you're cheesy, you get to say you've been "maui'ed"....... look forward to seeing you around the site!