OR to ICU to flying?

i am an or nurse who is interested in becoming a flight nurse. i was an lpn first and worked med/surg and then once i got my rn i went straight to the OR without any med/surg time as an rn. i have also been an emt-b for five years and have firefighter I. i work for a volunteer fire company. i also have acls and will be soon getting pals and am thinking about tncc. did anyone here start out in the or and if so do you think it was harder to make the switch to get your icu experience than if you had just gone from med-surg to icu? i have the opportunity to continue doing or or to make a switch to a med/surg floor that focuses on medical patients (including pediatrics) and vasculature patients.i was just wondering if anyone here could shed some insight into which position would help me more in getting into icu so i can eventually fly.