Last time we flew SYR-MCO on jetBlue, I called and they recommended arriving two hours early. Ours was also a morning flight. We were a party of six adults, a toddler, and a baby. We drove down from the Ottawa area.
So, we arrived the two hours early. It took us about fifteen minutes to unload the luggage and park the cars, another fifteen to check-in (did not do online check-in), another fifteen to get through security, and five more minutes to walk to our gate area.
That left us with about a thirty-five wait until boarding. A bit of extra time, I guess. But we really did not want to cut it any closer than that. One can never tell when the parking/check-in/security process will take a bit longer.
If you are flying jetBlue, they start pre-boarding for families with children about 35 minutes before departure time.
So, arriving two hours early sounds like a good idea to me.
SYR is not a big airport. About the size of YOW in Ottawa. We've flown out of YYZ several times, and SYR is faster and easier.
Hope this helps. Have a good trip.