I use Lightroom for organizing and for 95% of "developing". Several years before I bought Photoshop 6, I used the then current version of Elements. For the little that I used it, it worked fine. When I began to work with infrared, I needed to be able to channel swap, which Elements did not have. There was/is a person who developed a plugin for Elements for a nominal cost which "awakens" features in the program that Adobe turns off in Elements, such as the channel swap.
I have a relatively small number of images, about 20,000. If one diligently uses keywords, LR is all of the organizing one likely will need and keywords make it much easier to find an image. Lightroom adjustments are non-destructive, meaning it leaves the original untouched. It works seamlessly with PS or Elements if needed for what LR cannot do and adds the retouched image back to he Lightroom database.