Your in a similar position to me, i have 6 months full paid mat leave starting at the end of Nov and i plan to take an added 6 months because i feel a six month old bub is too young to be left and i plan to BF. I'm still tossing up whether to come back at all cause i am simply board with my job and any case if i do come back it would only be for two days a week.
My thoughts are never to shut any doors because you just don't know what is around the corner.