I'd do the flower thing

my vote is for Madelyn and Julianne... Faith and Hope for the middle names will cary on through all your children very sweet

keep in mind they might end up going by nn maddie and julie

I have a funny belief that every child should have their own identity... i know it really sounds fun to have names that start the same or sound same.. but twins will always be connected in a way that most people will never understand. But giving them a little something that can help them be individuals is always an extra bonus. Just a suggestion find a couple of sets of twins and ask them what they like most about being a twin and what they dislike most about being a twin.

other than that all the names that you are looking for are very nice. Good Luck!