This was my solution.
F-stop ICU pro and a 40L pack of your choice.
Chamonix f2, filters, light meter, 6 holders, 3 lenses, a bunch of odds and ends.
Used it at RMNP 2 years in a row, works very well.
Works as carry on as well on planes, minus the tripod.. threw that in my checked bad nicely padded.
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