From what I hear about Oman Air:
Salary for B737NG Capt is around $9200/Month
Housing is around $2000/Month
Widebody transition-- Don't count on it. But probably 3-5 years.
School-- Expect 75% to be paid, rest is up to you.
Life--Quiet, slow.
Current Oman guys can correct the numbers. This was from 2009.