HKguy...you will average 3 to 3 and a half trips per month plus the odd simulator duty every couple of months. each trip is usually 4 days leaving well after lunch on day 1 and returning very early in the morning on day 4...what this all really means is you will have about 18 to 20 days at home a month,
in terms of purely lifestyle the SO job is very very cushy, sadly though other aspects such as job satisfaction, seriously deteriorating conditions of service and woefully inadequate housing allowance for a family are issues which definitely need to be taken into account
Good luck though with whatever path you choose