Option A:You could press in a new ball joint with a c-clamp or hammer it in place. Newer bushings are cheaper than a new control arm, but you will lose time. It's up to you what you do.

I'd choose the cheaper route, do my own labor and save $$$.

Option B:
Replace whole control arm, acquire spring compressor, pay for an alignment.

Option A is a better choice in my opinion on a boring Saturday or Sunday.

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Only diesels in this driveway.
2005 E320 CDI 243k Black/Black
2008 Chevy 3500HD Duramax 340k
2004 Chevy 2500HD Duramax 220k