PEP review request: PEP 570 -- Python Positional-Only Parameters

We have recently finished the latest touch to the document for PEP 570 and we wish for the steering council to review it. Here is the document:

Here are some questions:

Can we suggest a PEP-delegate? If that is possible, we would like Guido van Rossum to be the PEP-delegate.
Should we submit the PEP document to python-dev or open a discourse topic for it?