Split the bid by county, because an install crossing the bay costs a crew half a day
The bay is a budget boundary, because a lead on the far side of the Howard Frankland costs a crew half a day and competes against a different set of dealers.
Split at the campaign level rather than with a bid adjustment. One campaign for Hillsborough, one for Pinellas, each with its own daily budget, its own bids and its own location list. You can then throttle the far side when the install calendar is full and open it when a crew frees up.
Day-parting belongs in the same conversation. A request from Clearwater at four in the afternoon is a measure you probably cannot serve until the following week. The same request from Brandon might be tomorrow morning. Bidding those identically is a decision, and usually the wrong one.
Exclude what you do not truly serve. Buying Pasco because Wesley Chapel feels like Tampa is how dealers end up with inquiries they decline, which costs money twice: once for the click and once for the phone time.
Use radius targeting around the yards you dispatch from, not a metro-wide setting. The map does not know where the crossings are, so you have to tell it.