thunder could use replacing if you're still going for the accuracy stuff. i was going to suggest shadow ball, but gengar seems to have it as a tm instead.. well, if you can nab yourself a second somehow, that'd be a good choice. then again, you do have rain dance, which ups thunder's accuracy.
hidden power could work if it gets you a nice typing. uturn if you're going for smth less offensve - jolteon's speed makes it a nice scout. protect also