I am slow building a WR, and I have been ignoring catching until ercently so that I can get my speed, agility, and vision up. I think those attributes are more important.
Because of this I bought a piece of AE that gives me a catching bonus with the knowledge that I will be selling it by the end of next season at the latest to add AE with a SA bonus in its place.
It has worked for me so far as my drops are down a little, and that is keeping me as the #2 WR on the depth chart so that I can get the experience I need. But I wouldn't recomment it long term.
I hope this helps.