If you just wanted to use it in-game, IVs don't really matter. Case in point: My B2 Lucario carried me through the game despite having a 0 SAtk IV.Reviving a Shieldon in X only to find that it has a 0 IV in Defense...
Really release Shieldon?
Bye-bye, Shieldon!
For competitive use, well, that's what breeding is for. :P