Advice on integration/restructuting

Hello.
I currently have a php/mysql driven site to display cruises and itineraries.

I want toi completely integrate it into WordPress, but am not experienced enough to decide on how to do it.

Option 1): Do I use custom post types with the itinerary delimited in the “content”, and custom metas for the date and days, custom categories for the cruise line and cruise ship, and regions and other custom meta fields for other comments? This seems to me to be the way to use WordPress, but I am not sure if the way queries work if it will be flexible enough to give me specific results (cruises between x dates, x days, this line, that ship, ordered by date, or length.

Option 2: Mix custom, non-template php pages with wordpress pages, using wordpress headers, and sidebars

Option 3): something I haven’t thought of.

I am not above figuring out the how. I can hack fairly well (if not slowly), and find a lot of answers through google. It’s the why I need the help with to start.

Thanks
Joe