We LOVED LTT...I woud personally keep that one. We also loved Chef Mickey's. I think your current ADRs are perfect so far. If it were me, I'd add Chef Mickey's on Fri. or Sat and I'd add a Fantasmic package restaurant for your Studios day. You don't have to go to Fantasmic if you decide that day that your girls are too tired but it would leave you the option and there's no extra cost to you. We ate at Hollywood and vine when we did the package. It was ok. That would only leave you 2 more nights, Sun. and Fri/Sat. I've heard good things about both Whispering Canyon and 1900 Park Faire. My kids also liked the princess interaction at the Norway rest., although not the food.
Good luck to you! You sound like you already have a great start on your ADRs!!