If your interested in uploading 300 pictures to Adobe stock; I would also recommend uploading those same pictures to Shutterstock. It doesn’t take that much more and it will add to your earning potential. (Just like Adobe, Shutterstock requires you to be at lest 18)
Right now the ratio of what I’ve made on stock is about Lightstock-1; Shutterstock-1/2; and Adobe stock-1/4.
Here’s a link if your interested in signing up.