Glass, Lexan, Acrylic, Polycarbonate or other?

I am bidding on an interior wall at a hospital for their history display. The architect has spec’d glass wall panels on standoffs, corners only except for the largest panels. Panels include 2-4’x9’h, 5-4’x3’6” and 5-4’x3’. The design has the two tall panels on the ends with a row of 55” touch screen monitors across the middle of the wall with the remaining glass panels mounted above and below the touch screens.

I spoke with the architect when he forwarded the plans to me and he doesn’t care which material we use as long as it is budget conscious to end with the final look he wants. We are doing second surface prints on all of them so it has to be optically clear. I was going to price glass (I believe it would have to be tempered?) but think that one of the plastics would be better. Any experience or opinions? When I told him that I thought that 4 corner standoffs only on the 9’ panels wouldn’t be good enough, he said he thought it would be fine to add 4 more so that they aligned with the ones holding the other panels.