I also understand. I don't mean to get to psychological on you but this is what I know to be true. As human beings we love to us each other's emotions against one another. We do it best when we know exactly what will push the buttons of the other person. With that said what your dad is doing (the guilt trip) is big time "projection". He is projecting onto you all of the guilt that he has built up over the years. He as well as your stepmother and sisters know and are aware that you have always done everything to be a part of their lives, so they have gotten used to you being the proactive one, making sure that you are a part of their lives, but they really weren't a part of yours. So now that you are doing something for you, they are surprised, or rather he is surprised and up in arms because he thought that you would always put yourself aside for them. Well, this time I say to you, do what makes you happy. If he and them want to be a part of your life, a part of your family, then they will do the needful and go the extra mile. It seems like you already know where you stand with them, so the ball's in their court, and if they don't then once again it will be his (your father's) and well as their collective loss, not sharing your important day or not being a part of your life.
Like you said this is a common problem. I was also three when my dad walked out on my mom. It took me 23 years for me to forgive him and to even acknowledge him. Cause where as you visited your dad, my father divorced his six children with my mom at the same time he divorced her. He got a new wife, new children, new life and we didn't exist. Now he loves walking around telling people that he has a daughter that is an attorney, a doctor, etc... As though he had a hand in any of it. Well, it is his loss because yes we are successful and we are happy and that is because of our mom and us having each other.
So you go have the wedding that you want. Be happy with the people that love you.