Yeah, it would be fine. But what I do is just clone Rare Candies lol. Anyways, for the IV calc, I suggest you go to Marriland and download Nightwing's Ultimate Stat Calculator. It's got a really simple interface, and is nice and easy to use.
If the pokémon has already obtained 510 EVs (check with the Effort Ribbon), then Rare Candies will not affect their stat gain at all. This is because without max EVs, Rare Candies will only level up stats, and not factor in already obtained EVs.
hi FV i gotta couple of questions? i just got my AR and im also an EV trainer (begginer)... so one is it ok to rare candy my pokes after theyve been fully EVd with rare candies obtained via AR and my other question is do you possibly know the IV checking code or where i can get it