for young kids, I really recommend using Five in a Row- it's gentle and will help you ease into the idea of homeschooling.
The book is set up for you to use award winning picture story books for 5 days, each day you do a different study with it- social studies, geography, math, art, etc. It really is wonderful and you will make wonderful memories. After that you will need something for math and something for reading instruction.
good luck with your planning!