One large suitcase for 8x10 camera, reducing back, film holders, tripod, etc all wrapped in clothing; that suitcase gets checked.
In your carry-on take lenses and film, and whatever else you normally take with you.
One of the carry-ons mentioned by Noah or Frank is a very good choice.
It's one thing to get it all on a plane and land safely with everything intact, but it's another to move around by bus, taxi or train within a country with all that gear.
And it's another thing as well to figure out how you're going to work, how you will pack for day trips, etc so keep that in mind as you're planning all this.