No. No one's stats get them into school. They *should* get you an interview though!! And that's what you need first. Then, do well in your interview, because that's what will get you into a program! Someone can have the best stats and not get in because they bomb the interview (no pressure ) , and someone can have marginal stats but do well in the interview and get in.
If you are worried about length of critical care experience, (although 2-3 yrs is usually an okay amount of time) you could take your cmc. It certainly won't hurt, but not sure it is really necessary.
Your overall GPA isn't a deal breaker. It's above the minimum for nearly all schools. There are plenty of schools that only count your last 60 or 100 credits for grades. Obviously you would rock that. Your GRE is GREAT. Don't waste any more time shadowing. Instead, take that time and apply to a few different schools.