Friend, Don't get scared and nervous. You will be fine with your kid and wife. Dont drop your study because of that fear. you will easily have your wife and kid with you and you can keep your study up either. Only the thing you have to have is determination that you can handle it and its sure that you will. Dont worry that your wife is uneducated and cant speak English. English is a language and everyone can learn a language. It is just the matter of time. At least we will have your son's bright future. You dont have to pay a penny for your kid in a public high school. so do it man. be brave. you just have to manage some money for their health insurance and it will be easier for you once you get job. And I hope you will definitely get job since you are a TA or RA whatever. So go ahead and get your family with you.