Good choice on the Montana room, then you are in the main building. Pirates is really good at DLP, when I rode it they didn't have Jack Sparrow in it, but from what I understand they are adding him in with this refurb. The story is a little backwards from the American parks, but I think it works.
You will have to ride Big Thunder Mountain, it is absolutely the best Big Thunder of any of the parks. The main portion of the ride in on an island in the Rivers of the Far West, so you have to go under ground in your train to get to it. It is just fantastic!
Phantom Manor was okay, it was a lot different than the Haunted Mansion in WDW & DL. It was just strange, I wouldn't say it is worse than the American parks version, and I liked that it was different but I wouldn't say it was my favorite. It is worth doing though.
Space Mt, was closed when I was there so I can't comment on that. But other attraction highlights were:
DLP: Alice's Curious Labyrinth, Autopia, Molly Brown boat, the night show
Disney Studios: Crushes' Coaster, Ratatouille, the Toy Story area, and Tower of Terror (I love that ride anywhere)
Anyway, let me know if you have any specific questions I'd be happy to help!