Is this a good trade for me?

Yes. If you could have Brandon Marshall and Greg Jennings on your team do it! The RBs in this deal are basically even. Parker has been hurt much of this year and hasn't looked as good as he once has. Hightower gets most of the red zone carries for the Cardinals. Jennings is a huge upgrade over Coles. Coles has only had one really big game while Jennings has amazing chemistry with Rodgers and will continue to put up big numbers. Good luck...