Since you are staying on site and will have FOTL, you will not need to worry much about a plan. We have been about a dozen times on site with AP's. We always decide what ride we want to do first, then go to that park. Generally we walk to the other park when we are done.
If you are big into coasters and want to make sure you ride in the front seats, you will have to get to IOA early--no FOTL for front row seats. If that is the case, I would go to the Studios after check in, and go to IOA the next morning.