Hey Linz. I am doing roses also. Mine are purple roses, just straight roses, no other flowers and 12 - 18 is appropriate for a bride's bouquet and then you decide if you want them out of the cooler for 1 day, 2 days or 3 days. Mine are going to be 18 roses out for 2 days. This makes them open enough to make quite a large round bouquet.
My bridesmaids each have 4 white roses in their bouquet, some dark purple flowers and some raspberry stock, they do not have straight roses. I liked adding the color to theirs. Again their bouquet should not be as large as yours. If you wanted them to have straight roses, I'd say 6 roses, and let them open for 3 days (out of the cooler) and they will have appropriate size bridesmaid bouquets. Play with some cheap filler flowers for their bouquets and cut down on the roses if you want them to have a bigger bouquet but not look exactly like yours.
Good Luck!
