I agree you should be okay. At least no worse than the rest of us.
The Jungle Book / Alice issue is that the characters that collect JB tokens have Alice Event tasks. For example, Mother Gothel is one of 2 characters that has a task for Shere Khan's ears. But her 8 hour Mowgli Ear task is also an Event Currency task. So I have her doing that task, instead of collecting Shere Khan. Same for Pete. He has an 8 hour event currency task (probably a token here, but I must not need it) or he can work on Shere Khan. Zurg also has Event Task / Shere Khan Ears overlap. There is a possibility that later on, those Event tasks will also generate Event tokens (maybe for Alice or Queen of Hearts). But I doubt that, except the crazies on this board, most people have all their JB characters leveled up, so you will just be in the same boat as the rest of us. But it MAY be worth not upgrading Mowgli once we get deeper into Alice and see where the tokens / tasks line up.