Speed Graphics abound but don't have much in the way of movements. You will need a camera case to carry the holders in and a LowePro will work fine. I really like my inexpensive Canon bag for my 5x7 sheet film holders. Some will want a dedicated dark cloth though, so make your own choice on this one. A good cable release is worth the cost as you will be using it for years.
Cheap ones have a nasty habit of breaking.
Fidelity or Lisco sheet film holders work well and the Fuji Quickload system works fine also and has the added advantage of your never having to load holders even though it limits the films you can shoot. Tripods should be able to hold the camera steady. Just buy quality when you get them as you will probably have them the rest of your photographic career, barring loss or breakage. Used are as good as new as long as they are in good condition. LF is simple.