That's hardly a compromise. 80% is still too much to be paying someone who is not even working. It needs to be less than half. I agree with the idea of putting money aside, so in the future, if you do have a child, you will be prepared. Also, 8 months total is kind of too much imo. It's simply not necessary to have that much time off between the mother and the father. Get a babysitter.
Also, I'd like to know how you feel if you eventually decide to have kids and receive no paid maternity leave for multiple months. I don't think you'll like that very much.