I am potentially looking at getting into a Kuiu pack. Either the Ultra 1800 or 3000 or Icon 1850 or 3200. My intended use is for day packs that I can put the essentials in such as game bags a knife or two, water and have room to also pack a shed layer if need be. Do these packs have a shelf to be able to put quarter on them between the bag and frame? Any sort of insght is welcome. Thanks!