Full hope is right in 95% of what he says.Maybe less than 3000/month for f/o.Then substract for dinners when out of base,so around 2200 per month is also ok.People has to pay for the assessment at cae,it's not free.
By the way,never heard of anybody flying 12 sectors,as that would be around 20 hours of duty time.maybe you are right,but looks weird.