Flowers for Who?

I'm trying to figure out the corsage/boutonniere count: Obviously one "B" for my sweetie, and his best man, and my future step-son. One C/B for my future M/F-in-law. If my aunt/godmother can make it out for the wedding, a "C" for her? My brother is giving me away (Folks have passed away), so a "B" for him. Should I get a corsage for his wife? All grandparents are gone too. Am I forgetting anyone?

Any help in this area would be greatly appreciated, since I'm doing the flowers myself (silk) ahead of time, and as much as I love Patchogue Floral, I don't want to make too many trips there.