If you read the tags on the feed bags you guys will have a little better understanding of the nutritional values. The only difference in layer crumble and gamebird feed is the crude protein and infused calcium. Quail roosters can barely process calcium, layer crumble is bad for them. There is a good reason that they call most of crumbled feeds we use "complete nutrition" for the birds they're specified for, a lot of research and development goes into making these feeds that way.
The only thing your quail need is game bird feed and water.