Oh I'm new to the Milwaukee Packout game as well, it's honestly like trying to put together Legos in a manner that fits on the base mounting plate while holding what you think you need or want. In place of the big 22" box I went with TWO of the 6" deep small parts boxes, One holds all my tools except my air compressor, the other can hold whatever. All of them having the removeable dividers sure add to the versatility for sure. Still tinkering with what I want where. I thought I wanted the one big cooler but like the 22" box nothing else really fits the Talon specific base plates. I went with two of the 16 qt coolers one for drinks and one for food if I know I'm going to be out all day with wife n dogs, otherwise the one cooler will be plenty for just me.
After all that rambling just trying to point out that two of those 6" deep small parts boxes swapped for that one big box may give you more options. Of all the things that educated me on what fits and don't fit with each other was the HOME DEPOT online build your packout combo configurator, it won't let you stack incompatible widths for each attachment plate size, just drag and drop the different sizes to see what works for you. I probably spent an hour playing with that while looking at the Talon base plate setup to figure out what works before making a decision.
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