paul
has your client had this done before?
it’s not impossible, but would need thinking about.
I would be looking at some form of edge grippers, or at least 6 holes drilled along the top edge to take the weight, and using small d shackles and cable to suspend, each "hole" would then not be stressed to much, and you would need to share the load equally between the points by using a continuous cable, threaded to points above, a bit like a corset or shoe lace, if you can visualise what I mean?
Peter