Have none of you ever heard of pokesav? its a program that lets you build hack codes. you can choose everything, from abilities to evs to pokeball and nature(whether it's shiny or not too). If ya wanted you could even get a pichu with levitate, earthquake, sheer cold, flamethrower, and transform.
after putting in your parameters, it'll give you a code which you can put into your AR code manager to access your hacked pokemon. Only thing is, some of the options can be slightly touchy, like the ev selection, cause that still has rules. sorry, but no infinite stats for you.