Paper lad,
Routes are on the Jet2 website. Loads appear to be >75%. Working 2-4 sectors per day. Average 65 hours per month. Some time, (1week / month I think) spent flying night cargo in EDI.
There are other jobs around at the moment that don't require you to part with hard earned cash. Try bmi regional, Flybe, BA and Britannia. Many of my colleagues have turned down Jet2 on principal. If you are mad enough to pay for your own rating than you will make more money flying for Astraeus, BMIbaby or EZY.