I haven't yet used HOD but I keep feeling strongly led to reply to this post!
I am planning on using a "modified" (by me) Bigger in the fall or sooner if we finish our school earlier.
I agree so much with what has been written here (I feel like I am a kindred spirit with Water2Wine!!!
I just wanted to offer some words as a mom of many as I too have five and will have a new little baby in May.
As far as "fun" and the other programs you mentioned: I only have personal experience with MFW and have looked at others- but not KONOS as I knew I could NEVER do it!
I would ask yourself, seriously, from the heart, if you are a very hands on type of mom. What is the point of tons of fun activities if you are stressed out, unable to get school done, or feeling very pressured? Some moms thrive on the external activities and would not feel "complete" without them. With a large family, if you are not one of those... you will probably feel swamped and discouraged.
As someone else wrote: MFW is designed to be taught as written. Although I am sure that there are many people who are able to flex it to meet their needs there still is a strong emphasis on every component being very crucial to the overall integrity of the program. Because you have used Adventures and K and First- you should have a very good idea of their flow and if it is what God would have for your family.
Personally, I would wait on TOG until later if you are feeling interested in that program. I haven't used it. I am one of those that can't really make sense of the online samples. However, if God is directing you to it- you will know. There are those who love it with young children...
I think Heart of Dakota would be very doable for your family. Sometimes that is what we need: doable, complete, that "gets the job done!" so to speak. If you are really liking what you see in Little Hands, I would venture to say that you will be happy with the older programs.
My one word of encouragement: in your search for "life" in your homeschool: make sure you don't put pressures on your self that will be hard to fulfill therefore leading to more discouragement rather than success!
I really think so much with home schooling curriculum is your personal goals for your children with an added dose of what can realistically be completed. Maybe thinking through those would help with your decision..
I hope this makes sense! God's blessings and peace as you seek His direction for your family!