As a CFII/MEI I feel the need to chime in as well. When you graduate with your CFI license and after the 6- 8 hour Oral and 2-3 hour flight you think you know everything in the FAR/AIM, but until you go to teach your knowledge to someone who has no experience in aviation is when you start to really learn an know what you are talking about. And believe me, flying IFR get really real when you take your student in the clouds the their first time and you realize that in reality you are the on at the controls cause they have the leans and are worthless (because they are just now learning) and cant really help you.

In a way being a CFII or a part 135 cargo pilot is a way of paying your dues and really learning how to become a good safe pilot. I can honestly say that I am greatful for teaching and really learning and knowing my stuff before I go into a regional airline where I have 50+ lives in my hands. That is alot of responsibility. When you are a CFII you can make mistakes and learn form them, but as an FO you are not allowed to have bad days or make mistakes. Yes the captain is there, but he doesnt want to fly with someone who he constantly has to watch and correct because they didnt take the time to get that knowledge behind them.

So I urge you to take the time and get that 700 or more hours of flight time in and go to a place where you will be happy. Being a flight instructor is respectable and very rewarding when your first student solo's and passes their first checkride. With out CFII's we all wouldn't be where we are today and I promise you that it will be well worth it!