Hi Susan! Congratulations on your new family addition and upcoming trip to Walt Disney World!
You've got me beat by one, but I definitely understand the need for space to spread out and be comfortable.
The best option is a 2-bedroom villa at a Disney Vacation Club deluxe villa resort. I suggest
Bay Lake Tower at Disney's Contemporary Resort as it will be the closest and most convenient location to
Magic Kingdom Park.
While you can easily walk to Magic Kingdom Park, be sure to enjoy the complimentary resort
Monorail for a short ride right to the park. Your family will love the view and you'll find it super convenient to roll your stroller aboard without the hassle of having to fold it up.
Your other backup resort choices are
The Villas at Disney's Grand Floridian Resort & Spa, or
The Villas at Disney's Wilderness Lodge. They also come with 2 bathrooms, a living area, a washer/dryer, and a fully equipped kitchen - all essentials when you have a big family!
Let us know if you have any other questions as you plan. I wish you a safe delivery and a magical trip to Walt Disney World.
~ Juliette