It must be extremely difficult to plan any airlines crewing requirements in the present turmoil. Ryanair were always 'lucky' because, 'til now they simply needed as many pilots as they and their external TRTO's could train. Now, given the uncertainty, they will probably still go ahead and train at least 3/4 of their requirements for 2009 projections and then panic train the final 1/4 if they are needed. With regards to joining, you should have a best case scenario and a worst. Best is 850 hours per year and a command when you have 3000 hours and the worst would be (guessing here) 600 hours a year and a command at 3000hours. Between 3 and 5 years realistically. However, as I said before, in 5 years from now will there be any growth left in Ryanair? Not based on current orders!
I enjoyed many years at Ryanair but have enjoyed fresher pastures and a kinder management style for the last couple of years elsewhere, but still have many reasonably happy friends there.