Can anyone correct these sentences?

Suppose I'm standing in front of a married couple. Can I tell them "You and your husband together is a couple and I want this couple to be one of the happiest couples in the world." or do I have to say "I want your couple to be one of the happiest couples in the world."?

"You and your husband together is a couple and I want this couple to be one of the happiest couples in the world. I want your family that is going to be made to be one of the happiest families of the world. God bless you, have a beautiful married life, love each other, take care of each other, understand each other and live in the best way possible."

Can anyone correct my sentences if they contain errors?