Others have posted how to do it, but at the end of the day the 20 day period doesn't matter. We moved from CA with 2 cars and just got it all done as we could. You do have to get your lisence first. AAA is the easiest way to get the registration done but it will take 2 trips since your vehicle is finances as explained by others here. The biggest thing to remember is that once you get it registered you only have two weeks to get it to an inspection center (basically any mechanic) to get the inspection and Emissions done