You can add a size sort in a few seconds, by clicking a (+) and selecting what you need from the drop-downs, or choose 'other' in that drop-down for a large variety of other search criteria.
Why would you need to show where a file is located? A simple smart folder will keep those files, regardless of their actual location. That's a useful trick from Spotlight.
You can also command click on any set of files in a search window, and look at info for all of those items simultaneously. It will fill up your screen quickly with info windows - but I don't know if I would call it 'laborious' exactly...
If you need some help in discovering some more of the options for using Spotlight, I'm sure someone here can help you in a variety of different ways.
Serendipity is a lucky guess !