Worth maxing out with rare candies?

I may just max him out cause I love this dude, even tho he does not have the best IV’s. Aside from my personal love for shiny ray, is it worth dumping my rare candies into him?

I may just max him out cause I love this dude, even tho he does not have the best IV’s. Aside from my personal love for shiny ray, is it worth dumping my rare candies into him?