Overkill, you all nothing of overkill. I had front and rear custome driveshafts made out of .250 wall. I have spun the shaft on rocks with the full weight of the truck on it and it just spit out sparks and rock dust. No damage except for scratches. It balanced just fine, in fact it only needed one small weight. Truck drives nice and smooth. Ask the guys here in Az what my nickname is, or just look at my fab work...it has been said that I could take on an oncoming train :lmao: Must have something to do with the fact that I grew up in the mining industry, big equipment, big steel!
I paid over $600 to have mine redone. I don't get the impression that you want to take this route though. For your needs I would expect to pay around $250+/-
But yes, regardless of the thickness it is far too thin for any kind rough wheeling.
No, I am not sure of the thickness, but I recall .085 for some reason, probably not right though.