This might be slightly off-topic, but still hopefully useful for some.
I find that most camera-specific bags are far to heavy and unwieldy for me. I do a considerable amount of climbing, hiking, backpacking, etc. and cannot take a 2nd pack that weighs as much as most camera bags do. I have been using a small summit pack similar to
this or
this.
I can fit water, food, camera body, 2nd (or more when i get them) lens, accessories, tripod, etc. all in the pack easily, with each camera piece wrapped in fleece or my shell jacket for the day for protection. I also carry a dry bag (small roll top) to stuff the camera in if it starts pouring in the field.
I don't know if this system will work well with the OP's large amount of equipment - but for smaller loads or extended trips, this works great.