Hmm, I think I can tell which other curriculum you are consideringAlison in KY wrote: Another fellow homeschooler suggested to me there should be a My Father's Heart of Dakota World curriculum put out there. Now that would go really well with my personality.

When i first considered the switch I thought the same thing- how i wished i could combine the two. Now, though, I think that while they are both wonderful programs, some aspects are mutually exclusive. For example, with MFW you can combine your 2nd to 8th graders, and with HOD the programs are designed to really fit the age/level/needs of the child by shrinking the age range. As much as I'd like to have my proverbial cake and eat it, too, it's just not possible in my particular family

It looked like you were also considering MFW Adventures for your 7 and 9 y.o.s. We did that program 2 years ago, but I don't think it's recomended past 3rd grade. You might want to ask about that on their message board.
Wishing you blessings as you search and pray for God's best for your family!
P.S. If you already own the Adventures manual, you could use the Book Basket lists to stock a supplemental basket to go alongside Bigger for any children who wanted more...especially the picture book lovers. We are REALLY loving Bigger, and like not being library-dependant anymore, but I was thinking about pulling out those lists since all my kids still really enjoy quality picture books to read on their own time.