Coaches do coach, but players are the ones that play. Even if Qatar is to take a committee of coaches inclusive of José Mourino, Pep Guardiola and Alex Ferguson i doubt whether they will reach the knock out stage.
Its a matter of developing young players, engaging in many tournaments and friendlies as possible. The current lot of players am sure none of them will even get the chance to play for Qatar in the world cup as more talented players will come out and shine.
Develop talent right out from the academies. I know of someone who can help - Ole Gunner Solskjer. He's the coach of Manchester United Team B and junior team. He's achieved alot with the juniors by spotting and naturing talent. Or maybe the likes of him can help.
If such measures are not taken then Qatar will perform worse than North Korea in South Africa!!
All the best though!