IT's a lot of moving in one week. I have done it, but I prefer to move once in a week. You still get to see 2 theme park areas but feel a bit more settled with 3 - 4 nights in a resort. I really like to stay in an MK and an Epcot hotel when staying 6 days or longer. I would stay at the BC and either Contemporary or Poly. My personal rule of thumb is a minimum of 3 nights per resort.
Reasons I do not like to move so often: There is some disruption for each moving day between packing Up, checking out, checking in and unpacking. Plus, for me, I don't like having about 4 hours ( 11:00 am - 3:00 pm) in the middle of my day without a room to go back and relax in with access to all my stuff. I handle it fine once in a trip, but with only 2 nights in a resort every other day you are moving again (almost, with one hotel you stay 2 days without moving))
Like GRKMBEE said, there are steps that you can take to minimize the disruption, though, and it is fun to explore the different resorts.
Only you can decide what works best for you and your family. Either way you have some great resorts selected to stay in! Enjoy!