Hubby wants to move from WI to FL.... :/

Hi all! Wife of 6 years and mother of a three year old. I am 26 years old. We live in Wisconsin and so does my whole family. The majority of my husbands family lives in Florida and we have an opportunity to move down there within the next couple months..... I’m terrified. I have horrible anxiety about leaving my family here. What if something happens to them? What if something happens to me? My mom and I are extremely close. And I have huge anxiety about traveling. We have two large dogs. How do I pack my whole family and house up and move across the country almost ...... please help. Any other ladies have similar situations?? How did you feel. What did you do