The lookout comes before Razorback on the same road, roughly a kilometre away. They are separate stops. Razorback gives you the closer, more dramatic view of the mountains. If you're choosing only one, I'd prioritize Razorback; if you want the broad valley view as well, Bunyeroo makes a worthwhile short stop before it. This is the wider, more distant view, not the closest look at the ranges.
For a phone photo, keep the valley below the ridges in a wide frame. That foreground gives the distant lines some depth; a tight crop of the hills loses what makes this lookout's view different.