Welcome back to planDisney, Giovaldy! I'm so glad to be able to answer your question today.
You have a lot of options when it comes to admission, so I'm happy to clarify exactly what you need if you want to go to
Mickey's Not-So-Scary Halloween Party but also take advantage of
Lightning Lane during that period of time when the park is still open to day guests. Of the three options you listed, only the third one, the
Park Hopper ticket plus party ticket, would work. Here's why:
If you only have a party ticket, that ticket itself isn't eligible for Lightning Lane purchases at all. Party tickets let you enter
Magic Kingdom starting at 4:00 PM, but Lightning Lane is not available to book or use with special event tickets. Once the party officially begins at 7:00 PM, all Lightning Lanes are unavailable, and standby lines are the way to go.
If you have a ticket to
Animal Kingdom or
Hollywood Studios as well as a party ticket, that still doesn't qualify you for Lightning Lane access at Magic Kingdom during that 4-6 PM window. A single-park ticket without the Park Hopper option only allows for Lightning Lane use at the park for which you have valid admission that day, so you'd be limited to Lightning Lane selections at Animal Kingdom or Hollywood Studios.
Now, with a Park Hopper ticket and a party ticket, you're in business! You'd use your Park Hopper ticket to start the day in another park, then hop over to Magic Kingdom whenever you're ready. With that Park Hopper ticket, you'll be able to book Lightning Lane return times at Magic Kingdom later in the day, even if your main goal is to stay for the party afterward. Your Park Hopper grants you admission to the park before your party ticket becomes active at 4:00 PM, and you'd also be eligible for Lightning Lane access.
So the bottom line: if Lightning Lane access at Magic Kingdom between 4:00 PM and 6:00 PM is important to you, the Park Hopper is the way to go. That's the only option of the three that you laid out that makes it possible.
I hope this answers your question, Giovaldy, and please let us know if there's anything else we can do to help you plan your magical vacation!
Jessica