score:3
You will have absolutely no problems to catch your second option. I've done it in 10 minutes, so even taking into account the luggage and if you'll catch some queue at security (which at zrh is very efficient) you'll never have more than 1 hour to get to your train. Distances are short and there is only one gate where you'll have to take a train which takes around 5min.
Your information about the trains 10-15min every 10min is quite correct. You'll get the exact schedules at sbb.ch
Finally the bus station is 5mins (on foot) away from the train station, you'll have enough time there as well - just ask someone for directions.