If I read your question correctly, you already have the suspension out and need to know how to remomve the lower ball joints. I recommend you take them to a reputable machine shop and have the pressed out.
Take your lower control arms, have them stripped/cleaned, and then paint them. Be sure and tape off the hole for the lower ball joint so when you take them back to the machine shop to have new joints pressed in you don't chip the new paint.
