I ended up getting the Stone Glacier Solo(3300 capacity). I got the gun sling and the meat bag. Total weight still under 4#. I like the SG because he has a simple 2" belt that is similar to my old daypack. I load up the belt with shooting sticks, knife, ammo, range finder,.......I picked up a pair of "hump" bags from a recommendation on another post. The intent for me is to use the hump bags to carry bulk food and water to get in. These mount on the bag toward the front instead of on the back like many other add on bags. This keeps the weight forward. By having these bags mounting loose, it also allows me to mount them all the way forward even with the shelf expanded. All of this with the idea to keep as much weight forward as possible. As I thin down throughout the hunt, these can be rolled up and stuffed in the Solo bag.
I have also experimented with StatPack hip bags. I have always been interested in this concept. The only ones I ever saw years ago came with a dedicated belt, which doesn't work with other packs. These bags are quick on and off, super light, and the volume is pretty impressive. They use elastic straps on the legs, and i have tested these for quite a few miles without any discomfort. I am not quite dedicated to these yet, because they block access to the hip pockets on my pants. The idea with these was to have something that can be easy access to water and snacks without taking off the main pack.
As you can see, I brain$%%^ everything. I just wanted to share on my latest ongoings.