Not to be rude, but it's just that people get tired of answering the same questions all the time. Do a search for *soa* and you will find everything you need to know.
To answer your questions (for something used offroad from time to time):
New spring perches/ extended brake lines/ entire new steering setup other than box, shaft, & wheel/ SYE and CV driveshaft/ something to prevent axle wrap/ extended sway bars/ lots and lots of little things that will drive you insane.
Not the shaft, but like I said the tie rods need reworked.
Your stock springs will last ok, you may want to throw another leaf in the packs and while you're at it, put some teflon lubricant between them. This will quiet them down and improve flex marginally. HTH and good luck
Blue '94 Wrangler, 2.5L: Under monsterization
37" Claws/teralow/HPD44/Trussed HI9/5:38s/detroits/SOA, shackle reversal on rebuilt waggy and XJ springs.
Blue Jeep Club member 2
Much more info here