as someone who did everything super cheap in college then axle swapped fully built axles later on, i am of a different school of thought... spending $1k on steering and suspension components is nice if you got cash burning a hole in your pocket, but not needed for someone just getting into a cherokee. spending a ton of money right away is a great way to get buyers remorse very quickly.
the stock drag link and a ZJ tie rod are more than enough for light duty use and street driving. a quality track bar using the factory axle side location is fine for any reasonable lift and stock pitman arm. you can definitely do everything in your driveway with some simple hand tools and time, and i recommend learning to do so. but the reason i recommend an alignment shop is that they can help you identify any worn components that need replacing rather than the internet telling you that you need this or that because their use has dictated such.
BEFORE recommending parts, your usage and expectations for the vehicle would be very helpful.