Hi Donna,
I have a family of 7 and I've spent a lot of time comparing all of our various lodging options at Disney World. If you are looking for the least expensive option for your party, you will want to get 2 rooms at a
Value Resort. The three All-Star Resorts are your cheapest option, with Pop Century pricing out very similar. Pop Century is my favorite of those 4 Value Resorts. The Art of Animation is Disney's newest Value Resort and it is currently more expensive than the others.
While Disney can not guarantee connecting rooms with that many adults in your party, you can always request them. If you book the two rooms together and request to be near each other, you'll usually at least get adjoining rooms.
With 2 Value rooms, you'll have 4 double beds and 2 bath rooms. I think you'll find that you'll have a decent amount of space that way.
Please let me know if I can assist you further and have a wonderful vacation,
Kaylene