You just need control arm bushings? What's reason for replacing?
Discussion
The front is sagging. And I don't have a way to push in bushings. Maybe getting quality bushings and having someone push them in is a better way?
Front end sagging should be tired/broken springs, not control arms. Check/replace springs first. Bit of a pain to install if you're not comfortable.
If control arm bushings are loose your steering will usually wander on you. That's first sign. Clunking if really bad. Similar with ball joints and tie-rod ends.
If you're doing 1, check all joints in the front (tie rod inner/outer, drag link, ball joints, control arms, even bearings, etc). Because you'll need an alignment whether you do 1 or all.
Better to lump all the work under 1 alignment and be done with it rather than paying for a $150 alignment every time you change a $50 control arm, etc.