I'm currently a 3/c interested in becoming an NFO. When would you say is the best time to start preparing for and actually taking the ASTB? Also, my eyesight is complete crap and, without surgery, I obviously can't be a pilot, but I was reading the NAMI standards and some of the requirements lead me to believe I'm qualified for NFO, but others lead me to believe otherwise. Short of doing the whole aviation physical thing, is there any way I could get a definite answer on this issue?