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Few users reported that Lightroom 4 doesn't work very well with the latest version of Mac OS. If you are buying altogether different machine which includes the latest version of Mac OS then, you can try running the Lightroom 4 on it and check if that helps.
Some people have upgrade to Lightroom 6 (Last Standalone version) in order to run it on the latest version of Mac OS.
Please check the below discussion:
Thanks for the answer. Any answer also for my question about PS CS3?
Photoshop CS3 works fine as per the user report however, you need to download the Java OS X 2015-001 to run the older programs.
Here's the article: photoshop cs3 and sierra - Apple Community