I read your story with interest and you're right. It needs a better flow. Here's what I'd suggest.
First, decide whether you want a narrative history of your family. If you do, then remember that a narrative has a beginning, middle and an end.
Secondly, remember that a narrative is not synonymous with chronology. The story is arranged to enhance the reader's understanding, not in the order that the events occurred.
Finally, I'd suggest you join a writer's group, attend classes or take a writer's workshop. That way, you'll learn about devices like plotting and character development that can help bring your research to life. I recommend the classes even if you don't decided to write a narrative. They'll just help make your presentation smoother.
Hope this helps you. As for me, I've been a journalist for 13 years, and St. Martins will publish my genealogical memoir in Feb. 2002.