"...Blanket rolled up lengthwise over my left shoulder...
Messenger Bag (over my right shoulder)...A very small rucksack...
Hanging on shoulder sling...My food Tube"

I think you are going to need more shoulders than you have. I am trying to visualize carrying a rucksack and a rolled up blanket over one shoulder, let alone the other stuff, and can't. My guess would be that if you are going to carry all that stuff, you would be better off with a larger backpack to carry most, if not all, of it in...