Middle school to Elementary

I have an interview on Monday for a role in my district at the elementary school. I have worked two years at the middle school teaching mostly SLD students. I do push in and pull out math. I love my job, but my goal has always been to work with elementary-aged kids. My question is, has anyone made a switch like this? What was it like? What are some of the challenges teaching elementary special Ed? I appreciate any advice/stories, etc.