Paying someone to do something as personal as a setup seems out of line to me.
Seasonal changes, dissimilar string types with different tension, all require a change in the setup.
Optimal action height can vary due to fret level, HOW you play (pick, hard finger style, slap, light touch)
String gauge , core type, core diameter all affect how the string vibrates: this influences the relief ( stiff strings like say, Jamerson flats, Roto 77 etc) can function fine with LESS relief, and FAR lower action.
As opposed to Roto 35-98 rounds may require more relief, (the bow in the middle of the neck) Due to the larger amplitude of movement with a more flexible string.
Harder playing and pick playing may benefit from higher action/ more relief.
I personally set all of my basses by “feel” and playing in. My necks tend to be NEARLY FLAT With SLIGHTLY higher action at the bridge, why one may ask? This keeps a more consistent feel and string height for more of the playing area, up to about the 10th fret.
An often overlooked yet CRITICAL part of setting up a guitar is the nut height.
A thread with a collection of good videos: