I can't give you much advice, but I would keep the Gengar over Sableye simply because Quick Guard is fairly common and it will ruin any Pranksters day. That is mostly just personal opinion/preference though.
You're gonna need some more Protect, too. Except maybe on Sylveon, since it is Choice Specs.
You're gonna need some more Protect, too. Except maybe on Sylveon, since it is Choice Specs.