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You can have as many subjects as you like; you can only have one story arc. Or, at least, you can only have one story arc per character. Do all of these aspects of the protagonist's life contribute...
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#4: Attribution notice removed
Source: https://writers.stackexchange.com/a/26045 License name: CC BY-SA 3.0 License URL: https://creativecommons.org/licenses/by-sa/3.0/
#3: Attribution notice added
Source: https://writers.stackexchange.com/a/26045 License name: CC BY-SA 3.0 License URL: https://creativecommons.org/licenses/by-sa/3.0/
#2: Initial revision
You can have as many subjects as you like; you can only have one story arc. Or, at least, you can only have one story arc per character. Do all of these aspects of the protagonist's life contribute to the story arc? Do they inform his desire or frustrate his achievement of his desire? If yes, do they do so in a fashion that builds the overall arc of tension? It's not about how many pieces you have, it is about how well they are coordinated to create a satisfying story arc.