Shannon:
Without hesitation, I'd recommend that you stay at the All-Star Movies, requesting the Toy Story buildings, and purchase one-park-a-day passes for as many days as you can afford, keeping in mind that once you buy a 3-day ticket, the price of the park passes drop
significantly for every day you add.
Staying on-property allows you to save money on parking as well as gas and, with the age of your children, the theming surrounds them with the Disney magic from the time they wake up until their heads hit the beds (that are sometimes decorated by the Mousekeeper staff with animal towels!) It's really hard to put a price on that.
Another benefit of staying on-site is your ability to purchase Disney's dining plans. If you're considering a Character meal or two, I truly feel you should look into the
Basic Dining Plan, The cost of one Character meal for your two older children can cover their child's plan for two to three
days! AND, it will help you stay on a budget when it comes to food costs.
If you have any more questions, feel free to visit me through my bio page. I'm all about sticking to a budget!
Wishing y'all a magical vacation!
Whitney