It depends what route you want to go, and you need to factor in the extra loans/debt from the MBA program you'd need in addition to your PharmD. Is it worth it (in terms of debt/interest rates)?
That said, I think neither (MBA/residency) is absolutely necessary.
Getting a good pharmacy education and being able to apply it in the real world (get work experience and work during pharmacy school), will land you a pharmacy manager spot straight out of school or a clinical pharmacist job without a MBA or residency. I know many new grads that are hired in retail settings as the PIC right out of school (simply because the older/wiser folks know better and don't want it, so its available to new grads... and they usually handle the job well). Hospital jobs are much less frequently encountered, but they are out there.
