Regarding your salary is not a big deal that is enough the limit for the salary for family visit visa is QR.4000 bcz i got visa for my wife and salary is about 5200 and regarding your wife delivery bring her at her 5 month pregnancy if u like to deliver the child here

recently my wife delivered our first child here and she came at her 5month pregnancy

charges for visit visa here at hamad hospital

BED CHARGES: QR. 400 PER DAY
NORMAL DELIVERY : QR. 1000
SMALL OPERATION: QR.5600
CESARIAN/ BIG OPERATION : QR. 8800

need any information let me know