Is Ryanair worth it?

[emergency descent]

i also do have the possibility to leave my permanent position to join ryanair via brookfield.
i did a lot of calculations the last weeks to find out if it´s worth it.
i think the first 1,5 years, i would even loose some money because i would have to pay a rating on the 737 and dont earn anymore money during that time.
on the other side if i look a few years ahead, the salery on a brookfield contract would be much better.
but this is only of real interest for me, if i dont have to pay anymore taxes or almost no taxes.

so i´m interestet, in which countrys other contract pilots have their official permanent residence, and how much taxes they have to pay.
does anyone know, how long it would approx. take, to become cpt. if I join as a JAR 25 F/O with about 3000 h. airline time?
thanx in advance.