Would this work to fix a cracked couch frame?

I have a damaged couch. Flat board is plywood, you can see that the plywood and the spring strut have cracked, and the nails attaching the strut to the plywood have failed. I plan to: 1 Cut and pull out all staples in the way. 2 Clamp the strut to the plywood. 3 Use wood screws to screw the strut to the plywood 4 Squeeze epoxy (or wood glue if that would work) into the split wood and plyboard 5 Attach mending plates to bridge the splits