Hi JenSMP,
We pulled our DS last winter cold turkey. I borrowed a few curricula from our local Gifted chapter on a trial basis. I also bought a few Singapore math books and other items from other homeschoolers and amazon. With all this hodge-podge mixture I learned DSs, then 6, learning style. Oh we did a ton of science to remind him that school can be a place to learn and have fun too.
www.superchargedscience.com Once I got a hang of how my little guy learned, I felt capable of deciding on a curriculum. We went with Connections Academy and after 3 weeks, we are both loving it. I knew I could not keep researching curriculum. I knew we needed someone to keep us accountable and there is always the possibility of putting him back in PS with his scores/grades transferring since it is a PS. So I would really recommend getting to know your DSs learning style before you purchase anything.