Cheers,
Good to see you asking some insightful questions about the career now before you commit to nursing.
Nursing has been one of the toughest careers I've ever had!! The high-stress clinical conditions, exhausting hours, dramatic personalities, and ever-changing regulatory paper-maze have kept this occupation at the top of the "wanted ads" since Florence Nightingale picked up her first 4X4..
Now, that said, as I look back over the last 8 years, I don't regret for a minute choosing this major as a bewildered sophmore college student.
I'm probably much like you in that I too get bored easily and it's hard to keep my interest. Nursing is a great career to help remedy that affliction.
Nursing has opened many doors for me and I've been involved in everything from clinical bedside to bio-tech/pharmaceuticals to education.. I don't know ANY career that can give you that type of professional flexibility..
The discontent, for me, came when I let the walls of a singular area of specialization draw too close together.. It was my fault for not moving on when professional challenges became more of a routine frustration than opportunity for clinical growth.. That's, in my opinion, where you'll find the seat of most "burned out nurses".. But that's what's unique and liberating about nursing; the option to move into something new and interesting..
Flight nursing has been a long calling of mine since I began a 7 year duty tour in EMS as an EMT long before I even went into nursing..
As you mentioned, most employers are looking for a MINIMUM of 3 to 5 years of critical care and/or trauma exposure (preferably level one trauma centers and major tertiary referral facilities that see both the high volume and acuity forging a confident and comprehensive clinical skill set)..
Outside of that, your focus would be on obtaining certification in ACLS, PALS, NRP, PHTLS, etc. etc... These aren't difficult to get (especially for a biology major) but, just as anything else, the certifications in and of themselves don't really prove anything but that you can regurgitate algorithms and drug dosages and employers know this.. They're more interested in your clinically "proven" strengths (advanced hemodynamic monitoring, clinical prioritization skills, resuscitation skills, events recognition/early intervention, pathology, and multiple event management). In addition, many employers are now showing an interest in seeing that you hold a "specialty certification" such as CCRN or CEN.. Don't let it overwhelm you.. you've got a MINIMUM of 3 to 5 years to get comfortable...
As I said before, this is a very dynamic field (not just in flight nursing) and I doubt you'll find yourself bored...
Your biology degree will be an asset also...
I hope I was able to give you a little insight that might help you in your endeavour..
Enjoy the journey and I wish you luck and success in whatever you decide to do..