These are my favorite curricula:
Sonlight http://www.sonlight.com/
Teaching Textbooks Math - the very best math ever http://www.teachingtextbooks.com/ The kids can be very independent with this curriculum, but it is still easy for parents to keep track of how well their child is learning.
Apologia Science for older kids - http://www.apologia.com/store/ And amazing science for elementary and early middle school age is http://www.jeanniefulbright.com/home.html This science is great for teaching multiple kids at the same time.
Beautiful Feet Books http://www.bfbooks.com/ Such a wonderful curriculum.
We always work household chores in the morning as part of our daily to-do list before we jump into school work. We have our BIG 5 list that everyone just does first thing. Big 5 is: 1. Morning Prayers 2. Shower and dress 3. Make bed and straighten room 4. Eat breakfast and help with clean-up 5. Daily chore (this covers any of our usual household cleaning, or taking care of animals or things like that.)
We have a goal to be done with our BIG 5 by 9:00 am so we can start school. (Yes, we are early risers - Dad likes to have prayers with all of us before he leaves for work at 6:30. It actually has worked out really well for us.) You could, of course, adjust your goal starting time to fit the needs of your family. We give our kids an incentive to be ready for school on time. Sometimes it's a little treat (like a single StarBurst candy or a piece of gum), but at other times we have had a reward system where they earn points for a reward down the road when they have accumulated enough points. Being ready to start school on time is one way to earn a point. (We also earn points for being happy and cooperative, doing their best work, things like that.)
Check Craigslist.org for used curriculum, or ebay or Amazon.com (they sell used books) or half.com. I have found a ton of material using these resources. Also, join (or start) a homeschool organization in your area. There are many groups that have used curriculum sales or swap meets to help keep curriculum costs down. It can be a challenge to homeschool on a tight budget, but it can be done. The internet is the most amazing resource. I use it all the time. I don't know how people homeschooled before the internet!
Well, I hope some of this has helped. I wish you much success and happiness. It can be a wonderful, joyful thing to be a homeschooling mom. (If you ignore the occasional day when you want to scream, pull your hair out, and put them all back in school!! Fortunately, these days are usually followed by an awesome day!))