which experience is best?

Hi!
i'm new to this board. So forgive me if these specific questions have been asked. I tried to find the info i was looking for by searching the different threads but couldn't find all the answers to my questions...

I am a nurse in Baltimore, Maryland. I have ED, OB/GYN, and Med/surg - homehealth experience. I also currently work prn as a Forensic Nurse Examiner. I have been interested in flight nursing since my ED days and want to know which experience i should seek now. My ED experience was quite "task oriented" i thought with not much acuity. But i feel from reading the other posts that some ICU exp would be best at this point to hone some critical care skills and then maybe move into a high acuity ED.

i have specific questions on this matter. Im unsure which kind of hospital to choose (lg teaching hosp or community hosp) and which unit would give me the best and overall broadest experience?
As i mentioned, i live in Baltimore. so i have Hopkins and UMMC Shock Trauma available to me as well as other tertiary/community hospitals. I am interested in peds and adults, so, SICU, CSICU, PICU and NICU, and shock trauma (yes, a broad spectrum). which do you think i should seek first - what's the best natural progression i guess is what i'm trying to ask?
do you think ICU exp would be better to seek before shock trauma/high acuity ED and if so, which ICU exp. Since i mentioned im interested in both adults and peds, which do you think is a better progression and which would give me the most well-rounded exp: start with peds and move to adults or vice versa. and finally, if i had to choose betw PICU + NICU, which exp do feel would give me the most well-rounded exp for flight nursing?
Thank you so much for your time. this site is great!!