Here are some size guidelines for combining more than one kit:

1 kit = 12 blocks = 3x4 block quilt = 24x32 inches

2 kits = 24 blocks = 4x6 block quilt = 32x48 inches

3 kits = 36 blocks = 6x6 block quilt = 48x48 inches

or use 35 blocks = 5x7 block quilt = 40x56 inches

4 kits = 48 blocks = 6x8 block quilt = 48x64 inches

5 kits = 60 blocks = 6x10 block quilt = 48x80 inches 

or use 56 blocks = 7x8 block quilt = 56x64 inches

6 kits = 72 blocks = 8x9 block quilt = 64x72 inches, or use 64 blocks = 8x8 block quilt = 64x64 inches

7 kits = 84 blocks = 8x10 block quilt = 64x80 inches, or use 81 blocks = 9x9 block quilt = 72x72 inches