Petals Florist

Can anyone give me advice on the order of rose petals?
My wedding is next year and would like rose petals everywhere.I with 20 tables, I am dispersing into a pool and flower girls need. I want a very dramatic effect because it is only the flowers I am having. I talked to a few florists that sell in posy box. Online they sell them by the pound, which confuses me. Also if anyone has had a good experience with a company online please let me know.
check with your florist again … rose petals are like feathers, you get a lot of $ … buy a box, and a rid of them. (now, while you have time to place them around and place them in a sample table) before setting the date, if you are near a holiday Valentine's Day flowers, Mother's Day can be difficult to get them, or have to pay more .. even if you have so many places … yet 're on time! work to your best advantage! Good luck and congratulations!