For mail flow in hybrid, enabling and disabling centralized mail transport is different. So, it isn't suggested to create hybrid manually. I would suggest you rerun HCW, it could help you remove mail flow from Edge to Exchange in one step:
If you need to customize hybrid connector, you could modify it after HCW creates new connector.
If you are using Exchange 2010 or earlier which needs to create connector manually, here is configuration for my send connector which may be useful to you: SendConnector
About receive connectors, it is suggested to use the default receive connector. If you need to create a customized one, here are IP addresses that are used by Exchange online.
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