BUY it and NEVER look back. Those "major" issues are actually minor in the grand scheme of things.
The 4wd actuator can be replaced with a posi lock. Basically a mechanical cable to engage it. I think there like $100 for a fancy one. Or if you research you could build one yourself for like $20.
I have no e brake on mine. Not really an issue. But my guess is that something is messed up with the drum brakes. No biggie weekend project. Probably under $100.
The bucking is probably a sign that the carb needs some tuning. It's likely due to the light engine load seen in 1st gear.
Find a welder and weld a new shock mount on.
Honestly there's thousands of guys on here that would no hesitate to pay under $2000 for a jeep with those problems. As long as the frame and body are good and the tranny shifts it'd be sold. And the tranny issue is debatable.