First, let me preface by saying I would wait until P1 is released.
The reason I would recommend to go to 8.2.5 is for several reasons. THey tightened up security with SSL and also an option to turn off SMB 1.0. Also, it will be Netapp's last release on the 7mode platform ever. So, this code base 8.2.5. will be the last engineering supported code for the life of 7mode