-Charmander-, wouldn't it be a better idea if you waited until the Suspect Tests are over before you start writing this up? If Murkrow ends up getting banned, you could be doing a lot of work for nothing.
I'm not saying you shouldn't, but I just wanted to bring that out.
I assume Life Orb is Mixkrow?
Okay, I think the order of the sets should be:
CM
SubRoost
Life Orb
Substitute
Scarf
Why is Life Orb Mix not the first option?
Because of 3 things: it doesn't abuse Mischievous Heart as well as the others, nor does it use Evolution Stone. Opponent's Evolution Stone is also more annoying for that set.