Split the account at the Perimeter before you split it by pool type
Geography is the first budget decision in this metro because it decides what a job costs you to deliver, not just to win.
Most pool accounts start life as one campaign with a radius drawn around the yard. A radius treats a Dunwoody homeowner and a far Gwinnett homeowner as equivalent, which they are not once trucks, crews and a full day of I-285 are involved.
Build separate campaigns by drive time zone instead. A core zone you serve every day, a secondary zone you serve on set days, and an outer zone you either bid low on or exclude outright. Each gets its own budget and its own bids, which is the only way to pay more for the work you actually want.
Set targeting to people present in a location rather than people merely interested in it, and add explicit exclusions for the areas you will not drive to. Otherwise the platform will happily spend your money reaching someone shopping for a pool two counties past your limit.
The vocabulary is a bonus. Ad copy and landing pages that say inside the Perimeter, or name Sandy Springs, Marietta and Alpharetta, read as local to a homeowner who has been comparing three national-looking sites.