I had a new thought about your issue. I would do a complete GEDCOMpare with your 2500 profiles. I would not plan to update anything or add anything to Wikitree with that GEDCOM. What I am seeing these days is that once you get to about 1800, many of your ancestors may already be on Wikitree. So, what you are doing with the first GEDCOMpare is to honestly figure out how big the task is going to be to add your family tree. You may find that there are only 200 profiles that need adding....of course, you may find that there are 2000. But, doing that intial compare will help you and will help the rest of us help you understand what the next step should be.