Broody duck, embryos....now what?

[NorCalDucks]

We had heard that runner ducks aren't broody but we have a super broody duck that wouldn't let us touch her nest. Decided to see what would happen if we left that clutch alone 2 weeks ago and it looks like we have 4 for 4 ducklings on their way. My question is, now what? Do we leave the eggs with mama? Once they hopefully hatch do we leave them or bring them into a brooder inside? We live in CA where the nights are mild plus we have a heat lamp installed in the house however with our 6 ducks and 1 drake the space is maxed out. Help? Recommendations to read up on this?