How much salary should I expect in Malaysia?

I have been in insurance industry in Canada for just over 10 years and currently working for an international company as underwriting manager for 2 years. We are looking to move with family (3 kids).                               I have seen a vast difference in ranges online. If anyone can please help answering:   


1) How much can I expect to make monthly (considering there is 30% tax on expats) and what is bare minimum with our family size as most international companies have head offices in KL so that is where we look to reside. I found some jobs and they are asking salary expectations.       


2) What are usually the standard benefits offered and what can we negotiate on?       


3) Areas in KL that are safe and family friendly?       


Thanks in advance for your input.