Except Harper was a disaster in LF, okay in RF, and fantastic in CF. Frankly, I think Goodwin starts in LF or RF until he shows that he's better than Harper.
He's a converted catcher, he's had very little experience in any of the outfield positions. I wouldn't write him off yet as a possible LF or RF until he's been given a substantial time and effort of the coaching staff to teach him the position.