Reading this, I carry too much stuff because I start out cold in the morning and stay out all day. It's MN weather so you dress for winter / spring / and summer and need somewhere to ditch layers.
Pack a lunch too.
I tried a kick stand vest and hated pulling the rug out from under my azz when getting up. Also hated reaching around for items in the pack.
Now I have a separate chair and my BWCA food barrel pack I flop down. It leaves me plenty of room to pack out a bird.
Add a book, fence style blind, and decoy and I'm a pinch point poster who occasionally moves.