Just be careful with the expenditure. It can rack up pretty quick before you know it.
so, first off still can't stop playing, god this is addicting. it reminds me of the weird s** roleplays i'd do with friends on G+ back in the day.
second i had a suggestion for a feature. maybe to combat the token limit you could have a setting to have it start deleting backlog as it creates more. like after a certain point(probably just before it hits the token limit) it just starts deleting the begining so you can keep going without having to start a new story or trying to sumarize(i haven't had much success with that feature). maybe just as an optional setting for those that can't stop going, you know?