It's awesome to have some Aussie coasterfans coming to Europe! I hope you'll love it.
When exactly do you plan to visit amusement parks? Most parks are open the first week of November (Monday 31th Oct to Sunday 5th), and some do open the final week of November as well.
Sweden has the best quality/quantity ratio in Europe imo, for reasons discussed above (also Lisebergbanan is considered one of the best Schwarzkopf by some!) However, while Liseberg will be open for some days in November, its high profile rides will be closed. Helix, Balder & co only open during Spring, Summer and Halloween. During the Winter and late Fall, Liseberg is more of a public garden, since it is located close to the city centre - I believe it's right next to the city college!
Toverland has the same issue from my understanding. After November 4th, only the indoor section is open... you would then miss on Troy (fab GCI woodie from what I heard) and more
Which transporation will you use btw? Some parks like Holiday Park, home of Expedition GeForce, are quite challenging to reach by public transportation - and it is closed during all but one day in November anyways. Phantasialand however, has a 40 min shuttle from Koln.
Here's a list of parks in mainland Europe, open in November I suggest visiting:
- PortAventura, Spain Shambhala is worth the visit alone, considered by some to be the best B&M and the best coaster in Europe, so much floater air! Great looking park as well. Open during the whole month
- Phantasialand, Germany Really unique park and one of my favourites. They have to work with a tight footprint and are really, really creative with it! Taron is an intense, very snappy Intamin LSM launch coaster. They have a €15 fastpass which you can use 4 times on most major rides except for Taron. Also, if you are a hotel guest, you can have excusive rides on Taron after park closure for one hour! It is really a treat to experience this coaster at night Open November 1->5th and 24->30
- Europa-Park, Germany No need to introduce this one. Lots to do, but the operations are super efficient so you should be able to do most thrill coasters (and perhaps every coaster) in a day. Might ask for the optimal order to ride the coasters and reduce waiting to some of my more knowledgable friends if you want. Open November 1->5 and 24->30
I'll post more if I think of more. Issue is, as other said, is that most parks are closed by November 5th About Disneyland Paris, both parks are doable in one day, especially if the park closes late. You might want to start with the Studios, which is quite underwhelming imo, and then enjoy the rest of the day at Disneyland Park itself.
Enjoy your visit to Europe!
Bon voyage !