Tank Rack, Panorama Shaped Shelf?

[Alexraptor]

So I have a couple of identical 61 liter panorama reef tanks that I would like to combine into a single system with a third identical tank as a display refugium.

I was thinking of doing a neat little tank rack using a shelving unit with custom shelves, but I'm a bit concerned if the shape would receive the support it needs?

 

Forgive my terrible drawing skills but this is roughly what I'm thinking.

What I'm worried about here is if whether or not the "Overhang" will properly support that part of the tank, or if it risks warping and cracking the tank?