Nice write up. I’ll add one adhesive to the mix. Being I work in aerospace and kinda play all day lol my past experiences with numerous adhesives I’d recommend ea9309.3 this one in particular solely as it has great elasticity and is microbial filled with micro beads to help adherence a shear strength from flexing. It’s used on the leading edge bonding of titanium caps the rotor blade spars. Might cost a bit more than JB weld but that’s what I’d go after.