Weed control in rye grass

I have about 40 acres of rye grass drilled into a coastal meadow. Basic spring weeds are coming up in it and coastal is starting to green up. I want to kill the weeds out so I have a good clean stand of coastal and rye when I cut in about 45 days. If I spray with something like grazon p+d will it knock the rye back? If so, what is something that I can spray just to kill the spring weeds out? Thanks.

Weed control in rye grass