Moving Boroko Port Moresby inPNG

Hi! Im Maria, my husband will move in Boroko Port moresby for work this comming December, I just wanna ask if my husband allow to bring wife in PNG after he get his work permit? coz we have no baby yet, and i'm willing to go with him. Also may I ask how safe in Boroko? Employer offer is A$3,000 +free accomodation, do you think its enough to live/move in Port moresby?what percent is salary tax? How about the cost of living per week? food/groceries per week? electricity? 

Any Filipino here? What are do's and dont's to bring in PNG, please give examples. are cloths are expenssive in png? shoes?

Hope you can help me..Thanks in advance..

Maria