So, I'm about to buy AA ticket from JFK term1 to SFO. It looks like terminals are not far from each other on the airport map, but I remember taking AirTrain last year and there was somekind of a problem and the train only moved one way, and not the way I needed. So I had to go through the whole airport, and really spent a lot of time on this circle. I arrive at 5.25 pm, term1, then need to get to term8, my second flight is 8 pm. Is this enough time to make it happen? I am american, no baggage just cabin size. Thank you.