Since I got my 5x12 I have been looking for ways to haul and hike with it. The camera will fit into most XL camera bags without the dividers but the film holders in their case are a bit too long or the depth too shallow. I would love another Atlas pack but the built in ICU is too shallow for this format.

I am looking at the Kelty 5500 but it is way to big. The Kelty redwing 50L seems to have about the right specs and can open flat rather than being 100% top loader, and I could use a small to medium ICU for lenses, meter, etc.
Looking at other tactical and external frame packs but not finding what I want yet. Depth is a concern when camera and holders are in the pack, but once the camera is on tripod the pack needs to be able to collapse.
Need at least 18hx10wx8.5depth (front to back) for the camera and holders + room for lenses/smalls. The camera and holders have protective wraps so not overly concerned with heavy padding. Waterproof and water resistant YKK zippers would be nice.
And need a way to place the FLM tripod.