His realistic goals are
#1 ranking (for at least one week)
A second slam to become a multi-slam winner
He's no Fed, Nadal or Djoker, so he won't be wrestling control of the tennis spectrum. One slam win was amazing enough. Whatever happens, his proper fans we'll always have that moment to look back on
Following his career from here on in is going to be stress-free, fun and intriguing.