We stay onsite for two weeks in June and one week in October and a week at Christmas. After hundreds of trips to Disney we have sort of a commando schedule that works well for us. We have 3 children ages 9,6,4 and one on the way, so yes you can do this schedule with kids. Our one week trip goes like this:
Most people check in on Saturday, however we have found that by checking in on Sunday you get off the "normal schedule" of most vacationers and avoid the heavy crowds even in summer or over holidays.
Leave Michigan Saturday morning
Arrive Disney Sunday 10:00am
Sunday - Check out the Hotels and have Dinner at Chef Mickey's
Monday - Magic Kingdom
(Everyone else heads there on Sunday because it is their first day)
Tuesday - EPCOT
Wednesday - Animal Kingdom (Always done by 2:00pm)
Over to Downtown Disney to Shop
EPCOT for Dinner and Illuminations
Thursday - MGM Studios
Friday - Magic Kingdom (Last day stay till they kick us out)
Saturday - Leave for Home
Sunday - Arrive Home
We have stayed onsite for as little as three nights and as long as twenty. So feel free to ask me any questions
We are going June 18-July 1

+one on the way