Switching to ER--Advice?

To all you ER nurses: I'm an LPN, starting into the RN program this fall. My eventual goal is to be a flight nurse, but I have a long way to go and a lot of experience to earn before then. From what I've been able to gather I need both ER and ICU experience in order to even been considered for the position. I've had eighteen months of pediatric and obstetric experience, and I really love what I do. However, the director of our ER, who knows of my plans for flight nursing, told me that if I would transfer at this point, she would hire me. That would give me two years of ER experience before I even got my RNs, then I could work a couple more years ER and then hit SICU and get into flight nursing two years earlier than I had originally projected. But I know it's a really tough job and completely different from anything I've ever experienced. Peds and ob is all I've ever done. I'm excited, but scared too. Can you all give me some advice and a heads up about life in the ER? Thanks!