Yes, you can buy first. CCV got no extra discount this time though which used to be the only benefit to existing owners.
And tell your DH not to worry - there is
zero chance that any
DVC would sell out to exiting owners (unless it were about a total of 2 units and that won't be done). DVC doesn't want to just sell to existing - they want to bring in new owners and even the smallest resort they've done so far hasn't even come close to not going to public sales.
I remember back when guides tried to build a hype that BLT would sell out before it was offered to the public 2.5 years later and still selling.
Buy resale and then take the savings to buy whatever resort your DH expects to come online that he would like to purchase direct.