Hiya
I'm with Rosa on this one!
Your daughters wedding day is one you should enjoy and remember with fondness. Even as an experienced florist I would pay someone else to do the flowers for me. Those few days leading up should be spent having your nails done and enjoying the memorable moments you have supporting your daughter on her special day.
If you decide to take it on yourself you need to be prepared for a lot of stress! Just sourcing suitable materials, conditioning and storing them is a feat on it's own if you don't have the necessary facilities or a supplier you can trust.
I would seriously recommend talking to an experienced wedding florist who will be happy to help you. You have time to shop around and find someone that will be able to accommodate your requirements and work within any budget you may have.
I suspect the consensus here will be the same from us all!
If you do decide to go ahead just bear in mind the time aspect you will need to forgive. If you're planning just the venue flowers you will need to say goodbye to the 2 days leading up and the morning of the wedding. If you take on the bridal flowers, bouquets and buttonholes etc, you really will find it difficult not to spoil what should be a momentous occasion for you and your daughter.
Good luck!