Go to the flydubai thread, there are thousands of posts that should answer your questions. No need to start a new thread and don't rely on other people to make your decision for you.
Command upgrade at FZ is NOT handed out by virtue of time spent in FZ. There are many guys and girls here who have not been selected for upgrade and have had their application put on hold for another 12 months..... having already been here two years. Even then, it is not certain that they will get their upgrade then.
Please understand this before uprooting yourself and your family to the desert, especially if everything you have planned is based on a definite upgrade after two years.