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I think I got my worst choice for r4 gem… who should I use it on?

I am lost on who to rank here… I want them both for offense and defense. Thanks for your 
advice!

advice!
5
Comments
Maybe wait to get Rintrah?
KUSHALA. She is another great option but there are many other champions that weigh in terms of versatility than her. Prime examples being WONG, RINTRAH and SCARLET WITCH SIGIL. Some other champions such as CHAVEZ and DESTROYER are more preferable than her.
So overall go for AMERICA CHAVEZ and Make America Great Again.
Kushala is good simply because of amount of raw versatility she has. She is an alright defender on buff heavy matches, but her value would mainly be on offense. I'd say the same thing for Juggs and Hood (especially because you have him awakened which adds to his defensive aspect more). On the other end, Mangog and Man-Thing have some amazing defensive value, but I'd struggle to use either of them in any offensive capability over other champs.
I can't really speak for the validity of Shathra, Spiral, or White Tiger, as I don't own any of them at a reasonable rarity to make that call. There are also other factors that you don't have, like Rintrah or Destroyer
Personally, I'd go with Chavez or, perhaps controversially, Dragon Man. Chavez is and always will be a monster dual threat, but I don't really know how badly she needs that extra rank, as her damage on specials is already very good. Dragon Man's damage is sustained rather than burst, so having another rank would help his speed directly. Plus he also gets immunities and and is decently tanky.
Hope that helps, and remember above all else, rank your favorites!
Least Stacked to God Tier Class
Also if you have a juggs duped relic (even 4 or 5 star relic) put it on him man, its awakening ability will boost your damage by a lot
Don't sleep on Purgatory as well, she might be the most fun to play!