Hello,
Well with what you just stated. If you want to feel better, get a steel housing and steel 3rd member and maybe ford explorer CV joints. just those 3. that's more than just good enough.
Or just the Cv Joints with Mike hagen's widening mod. If you do just cv joints, the next weakness will head right back to the 3rd member. I replaced my front 3rd with rear steel sami 3rd. Because I wanted the 26 spline side gears (it was so cheap that i had to pick it up). I use axle shafts from 96 and up track/kick and the XL7 too (Im currently looking for a spare). So... there's alot of cheap options and its all about luck too. There's craigslist, 4x4 forums and some wreckyards letting parts go for virtually almost nothing. Just my .02
if you decide to go SAS route, I would suggest only if you do some serious hardcore offroading. The cost is way more involved than what I just mentioned.
There's trail tough slayer kit, 2700 easily.
Or just pick up the front toyota axle and get a maybe YJ springs hook it up. Modify the perch on the passenger side of the axle. (there's a kit for this from SKy-manufacturing. but it says its only for the SAMI, but I believe this will work with KicK/Track). I know a friend who did this.... excluding the kit for the sami.
I would say this route is alot cheaper.... maybe.... $600 including the axle. Depends on your luck on finding it and the price. Most of the front axle are ranging from 450 to 600 complete. Ive seen a few that has gotten as low as 200.