Trying not to get carried away on front end rebuild

[chevyman95]

I'm doing a budget ls swap on my 1985 K10. Already pulled and sold the 350 for $500 today. The 700r4 is toast. While I have it apart I am working to fix a steering issue. It would wander all over the road. Pull left for a bit then pull right. It's lifted 4" with 33s. stock steering arm. I purchased a lifted steering arm and am about to pull the trigger on a new steering box, 4 new tie rod ends, and steering coupler assembly. I figure if I replace all these items at about $250 it should steer like a new truck. However now I'm wondering if I should go ahead and do the ball joints upper/lower and new bushings in the front end while I'm in there. This would add probably another $200 or so in parts that currently appear fine. So my question is when you are rebuilding something like this where do you draw the line?