Creating a CSR for a Godaddy SSL for Exchange Server 2016 serving Outlook 2016 clients

I have had a problem with getting with setting up an Exchange Server 2016 to work with Outlook 2016 and the client PCs have been using a mixture of Outlook 2010 and 2013 until I had time to deal with this.

This seems to be a result of me being a mean little ****** and trying to get away with a single domain SSL instead of a SANS/UCC, which I will get today.

When I create a CSR for a new-named SSL, I see my previous settings were:

Outlook Web App (Internet) - mail.mydomain.com
Outlook Web App (Intranet) - mail.mydomain.com
OAB (Internet) - mail.mydomain.com
OAB (Intranet) - mail.mydomain.com
Exchange Web Services (Internet) - mail.mydomain.com
Exchange Web Services (Intranet) - mail.mydomain.com
Autodiscover (Internet) - autodiscover.mydomain.com
Autodiscover (Intranet) - mail.mydomain.com
POP- myexchangeserver
IMAP = myexchangeserver

Is this all correct? If so, I will simply replace mail.mydomain.com with exchange.mydomain.com,  and am I correct in believing I need a SANS/UCC - this would appear to be born out by the fact that it states based on your current selections the following domains will be created:

mydomain.com
mail.mydomain.com
AutoDiscover.mydomain.com
myexchangeserver

Thanks for any help.