Nicely creative Nick, an unusual approach and it's worked well. Agree that there's one too many. There's a rule of thumb in garden planting/flower arranging (don't ask me how I know), that odd numbers looks much better than even numbers - so e.g. plant 3 or 5 of a plant rather than 4 or 6, or put 5 stems in a vase not 4. I guess it sort of works here to (for me).