You should fly what ever you can when ever you can. just forget, for a moment at least employment, when you do get to fly big jets you will wish for small piston engines I do. I am currently a Captain on A340-500 and -600 and wish for smaller planes and more interesting flying. However, I know this is where the money is. all I'm saying is fly what comes along until you get a good first step on the ladder and enjoy it.