Answer:
will need a ball joint press tool and possibly a ball joint separator tool as well (learn more about how to use those tools here). Some auto parts stores will rent them for free.
Pneumatic/electric tools will make your job easier but are not necessary.
Be prepared for the project to take at least three hours depending on your skill level and tools available. A control arm replacement would typically be a medium to high level of difficulty due to the labor intensity and special tools required.
If you are replacing your control arm or ball joints due to an issue, or if you are doing preventive maintenance on an aging vehicle, consider inspecting and/or replacing the shocks and struts at the same time, as well as the brakes. After all, part of the job may require you removing them, so while you are doing this, it may be a good opportunity to install replacement units if necessary.