What is your point, that you don't like my design? You are seeming to imply that I dismissed your concerns or comments. I can't see how this could be further from the truth.
I did the math and it looks very safe.
I built a scale model, very stable, more weight, more stability, just like the math.
If you read my OP, my concern was mainly around cantilevered shelf stability. That is still my honest concern, but no sagging as of yet.
Here's the feedback you provided, although I felt it was already addressed.
As stated in my previous post, the additional weight makes the rack more stable, and not less stable. Yes, its very difficult to move, and reversing the direction isn't ideal, but not bad enough to change them out.
I believe it's negligible, to the point of being irrelevant. I just don't think that much force, in comparison to the cantilevered shelves with white oak, is applied. It might be worth while to reinforce the uprights with steel L bracket though on the sheet good side. The uprights are glued, lagged, and tenoned into place though.
Yes, I agree, and I addressed this in my previous post which was a static calculation. Moving something with that much weight has to have very low velocity. It also safest to move from the base. I'm adding a pully system to make it easy to push and pull from the base.
I will say again that I'm not wheeling this all over, its being moved like 2' at most once in a while (once every month or two).