The park will open at 8am for resort guests. It is less crowded than normal opening time but people say the park tends to get more crowded as the day goes on as guests who were planning on making it for the morning still head there and the people staying off property come in. I have an AP so we go to them and then head back to the hotel and normally go to a different park in the evening.
I would walk from the Poly to the TTC and plan on being at the TTC by 7:30- I think it is faster to walk then to take the resort monorail from the Poly to the TTC.
Most people will head over to Soarin but the wait will still not be too long- some people will just grab a FP and other will go right to the ride but it can take on about 150 every 5 minutes if it is at capacity.
When we go (it is just DH and I so we don't have to worry about strollers or such) we generally head to Soarin, get a FP and ride, then head to TT and Mission Space, we go to Character Connection and then back into the land as it is time for our FP or sometimes we will ride Listen to the Land before our FP time has come up. On an early morning your FP time may be later so you may have time to go to Immagination Pavillion or the Living Seas before returning with your FP.