I think you will enjoy the All Stars and having two rooms. The extra bathroom and space will be great.
Once, about four years ago, my father had just purchased a new fifth wheel camper and was planning to take me, my wife, my son (then 2), my sister, and himself (obviously) to Disney for a week. He lives in NC, as did my sister at the time. We lived here in Tampa then too. We had reservations at Fort Wilderness. Well, just two days before we were scheduled to leave, he noticed the brakes on his truck were not working. He could not get them fixed in time. I jumped on the phone with central reservations and to our dismay could not get rooms at the same resort for the stay. We ended up arriving on Saturday at the Music in one room (four adults - 1 enfant - CROWDED), then on Sunday got a second room at the music. On Tuesday, we moved to one room at the Contemporary where we stayed until Thursday when we checked out. Our choices to stay at Cornonado Springs Tuesday night (in one room) and then All Star Music again on Wednesday night (in two rooms), or to spend both nights at the Contemporary (one room) but not to have to change rooms again. We opted for the Contemporary because my father just did not want the hassle of changing rooms. We had a great time and the moral of the story is about making the best of your situation. This was one of the best family vacations ever, eclipsed only by last years 7 nights at Port Orleans Riverside (same cast of characters with the addition of my daughter (2)).
Anyway, after that lengthy story, despite the size of the room at the Contemporary (with two queen beds and a day bed) the two rooms at the All Star Music were definately more comfortable with that many people.