Awaken & R3 5* magik

Vinvick

I just pulled 5* magik. This is my 2nd mystic 5* after gulli . I have 4* R4 Mephisto duped, 4* SS R3 dup.
Should I Awaken magik & R3 or save gem for a better hero?

Vinvick

Please suggest me other mystic champions if your choice is last one.