Definitely select CTC over and above the Flybe scheme. You do get a job at CTC if you make it through to the end, and it will be on 737, 757 or A320s.
Most who joined Flybe through the sponsored schemes will leave to go to other airlines. I can never quite figure out why these airlines do these schemes when they have a low retention rate. For BA yes, as most stay until retirement, but not the case here.
There already is a huge pool of wannabes to select from.