Hello, I'm going to be a freshman this coming year, and hope to be double majoring in physics and math (I still have to solidify that at my orientation). I've been doing some research on the physics GRE, and it seems that a lot of material tested is covered within the first 2-3 years of undergrad. Would it be a good idea for me to begin preparing for the test now (especially given that 80% of the test covers intro level physics concepts), and take it at the end of my sophomore or junior year? Also, would it be a good idea to take the mathematics GRE subject test as well? Would that boost my chances of admittance to a top ten school? Thanks for your help.