Primer a few parts. Started on shoulder and assembled together hood pins.
Using elbow pads for shoulder tire mounts. Made a bracket from 90 degree L bracket and bolted it to elbow pads. Measured and strapped with rivets to backpack harness.
Might have to cut wheel down to a thinner size, too much mass. Weight not an issue, the wheels are hollow, just too bulky. The inside of blue tape marks is how much I will trim off.