You guys don't need all that grease in there, all it does is slow you down, when the zuk was made they did not have all of the fancy grease like they have now, just get a good timken rating like 75 or so and put a light coat inside the bell of the cv joint itself, the king pin bearings don't need that much either.
Yep. Just pack them & put them back together. Samurais may have their little quirks, but the kingpin and Birfield joint area isn't one of them. Keep everything clean and packed with OEM-spec grease. Replace the pads and seals on the ball as necessary.
One thing that you have to remember when purchasing and operating a Samurai:
1. Don't count on the previous owner's ability to take care of regular maintenence items
2. If it has high miles, there will be lots of stuff that needs tending to at least once. Hub relubrication/seal replacement and timing belt replacement are two that come to mind.
3. Samurais are pretty well-built from the get-go (okay, some might debate the engine... maybe) so there is little point in re-engineering anything just for re-engineering's sake unless you are into that

.
4. Samurais are danged easy to work on. Well, if you don't count the Hitachi carburetor...