Many ED nurses are trained however, ACLS standards now require you to use other airway adjuncts unless you perform intubations frequently enough to be good at it. Many rural ED use respiratory therapy, anesthesia also.
I completed my MSN through UOP very doable on line; check out the state some have grants for working in rural setting. UOP has a NP track but does require some other things not sure . Doing school at night in front of computer in PJ's rather than driving 60 miles twice three times a week was a very wonderful way to go.