A second address in Clearwater is an operations decision that happens to affect search
Listing an office on the Pinellas side can widen the results you appear in, but only if somebody is there to meet people.
Local results lean heavily on proximity. A Hillsborough address competes for Hillsborough-flavored searches and does much less for someone typing from Largo or Dunedin. No amount of on-page work closes that gap.
The honest test is operational. Would you take a St. Petersburg consultation at nine on a Tuesday, staffed, with a person at the desk? If not, a mailbox listing is a liability. Platform guidance generally expects a staffed location, and suspensions happen often enough to plan around.
There is a second cost people miss. An unstaffed listing produces appointments you then serve badly, and the crossings between the two counties are limited enough that a poor fit shows up as a no-show rather than a complaint.
Settle the office question in the practice meeting. Once it is settled, the listing work is an afternoon.