"Well thats me" - not a very educated post... obviously you spend the time at the desk. Oh well
Maximum number of flying hours in a year = 900 => 75 hours per month
Maximum number of flying hours in a month = 100
So by doing 80ish hours a month you will get close to 'maxing' out your annual hours. So 23 hours per week is full time. Also remember that these hours are block times, not duty times, which can be a big factor in shorthaul - you may spend hours between flights.
Most -400 and 777 pilots can expect to do 800-900 hours per year, and if one were to join the mighty airbus fleet you can expect to do around 750 hours per year. Mostly by day and frequently at weekends!