It's your bass and your budget, so 100% your call.
But compared to the fretboard leveling and coating, refinishing a bass that's already beautiful will provide minimal "bang for the buck".
Consider Dingwall's advice to you:
This bass was custom built to the specs of a different customer.
The shop got to see how that combination of woods looked together before the finish was applied - and chose a finish that would tone down the area where those three woods are visible together.
But compared to the fretboard leveling and coating, refinishing a bass that's already beautiful will provide minimal "bang for the buck".
Consider Dingwall's advice to you:
This bass was custom built to the specs of a different customer.
The shop got to see how that combination of woods looked together before the finish was applied - and chose a finish that would tone down the area where those three woods are visible together.

