You sound almost like Ali G. Hehehe.
The Misdreavous has Shadow Ball, Dark Pulse, Psychic, & Pain Split, which is a very powerful move-set; that means that you should have very little issues when it comes to training her short of not having enough time.
I unfortunately can't say the same thing for both Murkrow & especially Shieldon... Murkrow has only the basics, composing of Wing Attack, Astonish, Haze, & Pursuit. I haven't even touched my Shieldon, as it still has Metal Sound, Take Down, Iron Defense, & Taunt.
They all are in their twenties, however, so if you want any of these move-sets altered in any way, speak now. Do keep in mind that if you want me to alter the Shieldon's move-set, you might have to transfer him to my Diamond game...