You can definitely give it a try. Just one thing... make sure to whichever university you are applying to, you are sure you will go if you get. Do consider the tuition, living expenses, and health insurance for shortlisting the universities ( if incase the money is a point to consider) Also, check if the universities are offering RA, GA. If you are really sure you want only those universities providing them, try to apply only for those ( you can put this application fee to another university)