maybe try 8 across by 9 down? I would go with a narrow red border before the pink floral one and maybe end with a red binding.
The other thing I might do is just put them all in a bag, the squares that is, and draw them out one at a time and use them as they come out. Truely scrappy in that respect, letting go of all control, or most of it anyway. If I get 3 the same in a row, I'd put the middle one back and pick again. LOL