We used Core b with MFW K and it's a fun core. I only used the read-alouds, not the workbooks. I think it would be easy to add any read-alouds you wanted to Little Hands.
I have to tell you, the schedule that come with it is disappointing. You could really just use the books on you own as extra reading without a schedule.
Now with Little Hearts, you won't need any extra. There are read-alouds scheduled every day, and there is a supplemental reading list in the back that goes along with the history. I have a feeling a Sonlight day is a whole lot longer than a HOD day, and my kids are still needing plenty of imaginative play time...in fact that's what they're doing now! I promised a long "recess" this morning and they promised to not complain when it was time for reading (everything else is DONE!)
Now, bear in mind I'm biasied

but Preparing just looks like so much more fun that Core 1+2. You could always use the Sonlight catalog for book ideas. It also (just from drooling over it on the site) appears to have plenty of literature already scheduled, so you may not need any other book ideas.
I am not a craftsy person and that was one of the big reasons I left MFW. I was leaning toward Sonlight for that very reason (no crafts) when I found HOD. There are just enough hands-on activities scheduled...I can handle it, and I've discovered that my kiddos LOVE the hands-on!
HTH, and keep asking any question you think of. We love to help!

Mel