Sharon,
I would ask you to send me your question again around the second week of August, that way I can make my suggestions based on the Extra Magic Hours that are available. Until then, without that exact information, this is what I would do;
- October 31 - Magic Kingdom
- November 1 - Magic Kingdom
- November 2 - Animal Kingdom
- November 3 - Hollywood Studios
- November 4 - Epcot
- November 5 - Magic Kingdom
This gets you starting your vacation with the park that is probably of greatest interest to your 3 and 6 year old. You then move on to the other parks, ending with the 'big park' to really bring a great closure to your vacation.
I really like spending my first day at the Magic Kingdom, and love having my last evening at Epcot, for the IllumiNations show.
Send me more questions, including something in early August to refine the answer, if needed. Also let me know of any special interest for your sons, you, and your husband, if I can help with dining or special experience suggestions!
Have a magical vacation!