Hi Nikkie, How exciting to be planning your first Disney World vacation. Your family will make memories that will last a lifetime! The fact that your oldest is 19 now is all the more reason to book a trip together...before they are off on their own.
My kids are 18, 14, 10, 8, & 6 and our Disney vacations are some of our fondest memories together. Disney has so much to offer, for people of all ages. With a family of 6, your best bet would be to either stay in the
Cabins at Fort Wilderness (sleep 6), the
All Star Music Family Suites (sleep 6) or 2 connecting rooms in any of the other Resorts. Depending on your budget, you can browse the various options:
Value Resorts,
Moderate Resorts or
Deluxe Resorts. You could even choose a Villa which has a kitchen and washer/dryer (although these are more expensive).
Given the age of your children, I would recommend that you visit ALL of the Parks! If you buy Base tickets, as opposed to Park Hoppers, you will save money. You can then visit one Park per day and thoroughly immerse yourself in the Magic. Your older kids would likely love the thrill rides at Hollywood Studios and Animal Kingdom. The Magic Kingdom is not to be missed, and Epcot is fantastic as well.
Due to space constraints, if you can send me follow-up questions with any other specifics that I can help you with, I'd love to assist with your planning.
Kaylene