Julie,
I know the ladies are having a hard time knowing how to help you best in your decisions because the part of HOD that you're wanting to use is only a fragment of what we're about progam-wise. To put it in perspective for you, it would be like you asking on the MFW board if you could just omit the history, Bible, and science in MFW and use the rest of MFW. Ask yourself, what would they say at MFW? They'd say you'd be missing out on the whole point and purpose of MFW.
So, we're struggling in how to help you, while still giving you good advice. Only you can know what the Lord is directing your family to do, and you may certainly use any part of any program that you feel meets those goals. I know we have had ladies start out using HOD to supplement another program, and then have later switched over to HOD entirely, so you're not alone. But, the only one who can truly know what's right for you is you.
We wish you peace in your decisions!
Blessings,
Carrie