Out of the choices above, I'd go with Monster House. It's one of the Halloween movies that kind of takes a backseat compared to others. That said, one that I feel deserves more attention than it's getting nowadays is Rankin/Bass' Mad Monster Party. I mean, if they can air their Christmas classics every Christmas season like Rudolph the Red-Nosed Reindeer, Frosty the Snowman and Santa Claus is Comin' to Town, just to name a few, then why not give some attention to some of their other holiday works, am I right?
If you're interested, since you're planning on watching Halloween content, I can provide links to their three Halloween cartoons. Hope you enjoy them.
Mad Monster Party
Mad, Mad, Mad Monsters
Jack O'Lantern