At 160k miles, you'll definitely want to change both bushings and the ball joint. That said, I'd be shocked if that was the original control arm.
Regardless, it would have to be a pretty quick job of pushing out old bushings and putting in new for me to not just have a whole new control arm ready. I'd also want to somehow be sure it was almost certainly going to happen without a hiccup, and things wouldn't go sideways halfway through and leave me with an inoperable vehicle while I wait for a whole control arm to arrive in the mail because I had to saw apart the old one to remove it or get a bushing out. I don't value my free time cheaply.