If u can get the family visa within 6 months,then its ok.I think for family status,u need atleast 6 months bank transfer & salary of around 7000 QR.Its better that you try for family visa than visit visa.Since ur wife is 2 mnths pregnant,& if u r bringing her here,she has to deliver here& in visit visa,delivery expenses will be very high.Also there is a risk of travelling back if the visa is not ready by that time.So think twice before u decide.