I don't think it would be a good idea to have both the mytho and the cursed. So one of the two would be fine.
To have a bear you would need more then 18 players. 20 atleast I would think or else the villagers stand a small chance. So since
Malka only wants 18 players I don't think the bear would be a good idea.
For 18 players I think this should make everyone happy:
3 wolves
1 mytho or cursed
1 seer
1 hunter
1 ranger
11 ords
Plus with 11 ords you could easily add in the two shirriffs.
But of course it is completely up to
Malka.