Great so everything important is done. So please submit a request to the CA/B forum. There is nothing in the way for servers to support Ed25519 and Ed448. So you should get started as soon as possible. Even if they don’t want to support it now. It would be great if you would offer a Ed448 root anyways, so it can be used for m2m communication and because the chicken egg problem is gone, browsers would start supporting it.