Nice looking Jeep! Welcome to the forum and to the world of Jeeps.
If it were mine, I'd go through and change all the fluids: oil, transmission, transfer case, f/r differentials, brake fluid, power steering fluid, and radiator. Then I'd hit all the lube/grease points with fresh grease. That way, you know everything has been refreshed.
As far as the suspension, it is hard to see everything in the photos. If it were me, I'd test drive it at various speeds and see how it tracks and rides and whether you get the infamous "death wobble" (you'll know you have it if the Jeep has it!!), both on pavement and dirt roads. It looks like you have sway bar disconnects, so if it were me, I'd disconnect those and repeat testing at various speeds on dirt roads (I would not advise running with the sway bards disconnected on the street at all, nor would I go on dirt with them disconnected over 45 mph). If all feels right, you might just be alright for many more miles.
The Jeep in-line 6 is a pretty long-lived engine for the most part. They are not very fuel efficient, but they seem to last a long time and short block or long block replacements are not prohibitively expensive and are readily available.
YMMV.
