Bridal Bouquet

These are some bouquets I like.

I really like the lavender roses and purple lisianthus in this picture.

I also like lilacs like in this picture.
From The Knot.

I want my bouquet to be similar to this, except that the roses would be lavender, the hydrangeas would be light blue, and it would also include blue delphiniums.
From The Knot.

I like this idea- sorority pin on ribbon of bouquet.

We met with our florist and finalized everything (mostly).
My bouquet will have: lavender roses, light blue hydrangeas, lavender lisianthus, and light blue delphiniums. The bridesmaids' bouquets will have the same.
Boutonnieres will have a lavender rose and little bit of blue hydrangea.
We are having two alter flower displays, which will have lavender snaps or lavender gladiolas, blue delphinium, and blue hydrangea. We will be taking the alter displays to the reception for the buffet table. We are not doing pew decorations.
The cake will have lavender lilacs.