looks cool 8-) I would probably buy it.
But in order to achieve maximum realism you would have to start on reserve ;D
play the game for five continuous days, all the while sleeping on a cot in the computer room for 6 hours a night eating a diet of fast food or only what can be purchased from a vending machine...
...and then roll the dice after your last flight.
If your dice land on
2-4 - You get to go stop playing for a few days
5-8 - You get "extended" to do one more leg
9-10 - you get extended to do two more legs
10-12 - you get extended to do an overnight followed by a full 6th day

but from a casual gaming experience... it looks like a very cool program! :D