As you've heard here, John, the issues you're concerned about don't raise any red flags individually. Anyone familiar with 152's knows there's nothing that can't be properly repaired on them, and there are no metal fatique issues with 150's or 152's. However, collectively, $20k is too much to pay for these issues, especially since at some point you will likely want to sell the plane for whatever reason. Most of your future prospective buyers won't even consider buying this plane for the same reasons you're questioning them now. Most of us are prepared to take a hit at resale time, but with the issues this plane has, you will have to wait much longer to find a buyer, and may have to take a much bigger hit, especially as the engine reaches TBO and beyond.
Short story? There are much better deals out there for very little more money! Regardless of inflated valuation on a few websites, there are beautiful 152's out there with half the times for $25K and less, if you're patient enough to keep looking.
