Depending on your mech aptitude all are doable by yourself, wear in those items is the "knuckle/ball joint" in them if not graesed or a OEM non greaseable style on there, grease dries out and metal on metal wears out eventually, there are some imports that are okay, but I like MOOG parts, with grease fittings.
You didn't mention them but have a look at ball joints & tie rod ends as well, when one piece starts going bad others are soon to follow (kind of weak link in chain broke just enough to make rest of chain pull double duty and wear also), factory ball joints are sometimes riveted in place, grind off heads with a dremel and finish rest of it by drilling if it won't drive out with punch (hard bit, slow to medium speed-plenty of cutting lube).
Last year I rebuilt the front end on my burb, was about $400 in parts, mostly my labor and $50 to realign and when I took it for realign, I supplied the new pitman arm and let them put it on for another $50, they broke 2 pullers getting my old one off. Pitman can be a bear if it has never been off
Before removing old tie rod ends measure & record how many threads exposed on old ones, run in new ones to same length this will be close enough to get you somewhere that can do a proper alignment setting for you,
