Look at the price of oil today - $145 per barrel. Ryanair have not hedged their fuel, so at some point, if oil continues to rise, O-Leary is going to start parking more than 20 aircraft this coming winter. I don't know at what price this will be, but he is starting to look a little bit foolish already. At $180 a barrel in December?
If you don't fly in Ryanair, you don't earn much money if you are an employee. If you are a contractor and you don't fly, you don't earn any money. Trainee cadets are very cheap, but once you have done 6 months, you get expensive, and I reckon that could impact your hrs rostered.
I second the opinion that if you go from TP to Jet, unless you are joining BA, you are going to get shafted by some type-rating deal requiring cash or a loan - for example the EZY, Jet2 schemes.