wedding flowers

I have a friend that will be married soon. And they opted to do the preparation personally, meaning no wedding planner. They are done booking the church & the reception venue. For the flower arrangement on both the venues, they decide to order wholesale flowers . Then they will just ask the services of their aunt for the decoration. For the the type of flowers, they still have to decide on the following roses, calla lilies, rose petals, and gerbera daisies. They asked for my advise on what type of flowers to choose. Since i love calla lilies i chose this one. I feel excited for their wedding too.