Hi Jenn,
I am sure you are very excited about your upcoming trip! While the Park Hopper Option offers the flexibility to visit more than one park per day, it is not always the best option. I find that with small children, I tend to stay in one park all-day. There is so much to see and do, you may not have time to park hop! Not to mention the fact that park hopping can tire the little ones out as well.
It seems that you have already planned out your days and it looks like a solid plan. I would suggest that you check out the
park hours for the park you have chosen for each specific day, that way you have enough time to see and experience everything the Disney Parks have to offer!
Also, keep in mind that Animal Kingdom closes the earliest of all other parks, (often as early as 5:00 p.m.), which gives you a great opportunity to hop over to Downtown Disney on that same day!
Last but not least, always remember that you can also upgrade your tickets to the Park Hopper Option at Guest Services at any one of the Disney Parks and Downtown Disney during your visit!
Have a great time!
Yael