For years I've adopted the same approach, korum it ruck bag in in one side 1.5ltr flask.
In the other side pockets scales, sling, and always 2 tins of spam.
In the small side pocket, leads and my camera kit.
In the main compartment a small 6ltr tub , that contains a mix of pellets, a tub of wafters, a tub of paste, my pva tube and plunger, scissors, plus i always find a few leads , needle stops etc when I'm getting low on pellets in the bottom

.
With that my tackle box and snap box. which leaves enough room for a bag of boilie chops.
Attached to that with 2 big plastic carabineers, my fast mat. Inside my chair is my buzz bar bag with front and rear rests etc...
The chair goes between the straps and clips on the ruck bag.
That all goes on my back... The more weight there the better Imo...
In my quiver, 2 rods and reels.
Net rolled up on arms and net pole.
And a korum tripod adapter with 3 storm poles attached... Sometimes my Brolly.
That's it , it might sound a lot to some .
And yes I still have to swap hands on the quiver every now and then if walking any distance.


But it has served me well..
The only thing I'm trying to lighten at the moment, is myself


..