I am an Australian national, recently married to a United States citizen and currently residing in Las Vegas, NV with my wife as a tourist. I have no criminal history and am trying to have this application submitted to the USCIS by February 25th as this is the end of my stay in the US. Primarily, we are wondering if we should expect a clear advantage of hiring professional legal representation over my submitting the paperwork and application ourselves. Could I expect a faster approval perhaps? Should I expect my attorney to offer insights and advice I would not otherwise be able to find on the USCIS website, or other supporting online material? - My query here is of course not meant in any disapproving discourse of hiring a lawyer, simply to have the advantages of doing so clear to us.