ICU Nurse Reentry into ER

I would appreciate advice on successfully entering the E.R. after 20-years as a legal nurse consultant and 10-year of ICU/CCU experience prior to that. I am enrolled in a RN-refresher course (8-weeks) followed by 160 hrs of clinical in the area of my focus. Also, BLS scheduled for next month. The ER department head of a local hospital told me I would not be a first choice candidate for ER Nurse, that I should stick with ICU/CCU. How can I successfully change my focus to ER?