The final Curriculum is Tanglewood which is a combination of Classical & Charlotte Mason Education. I also use some of the books on this list but the main thing I have used from these people is their core book. It is an awesome lesson planner for the Classical or CM teacher. I hope you have a chance to explore these sites and consider some of the free things homeschooling has to offer.
These options will all provide a wonderful education for your little ones and will keep some money in your pockets so you can afford a few field trips and vacations along the way.
Rooster Hill Academy