I'm making a semistall team with a rock polish aggron and the Set-Up. I was thinking of a lead hippowdon, a Wish Bliss and a Taunt Skarmory and a Resttalk Spiritomb. My last slot would be a scarfer. First off, are there any flaws to this team that you can see now, and second, who should be my scarfer?
I don't think I've ever effectively used a Choice Scarf outside of Trick, so I'll let somebody else answer that. However, your team does seem well rounded so far, I would maybe suggest something like Empoleon to deal with the likes of Starmie