Glad to see another NJ'er who is willing to drive
I'm in eastern NJ, between Toms River and Manahawkin, and always drive straight through. I dont really take shifts, i normally let everyone sleep because once im in the world it like i get hit by lightening, and even after a 15-16 hour drive overnight, im ready to rock after a shower and we're normally in the parks till close the first night.
Your in Western NJ so just for timing i'd put you just a tad north of trenton. You should be able to hit 295 quite easily and its a straight shot from there. If you do plan on stopping I'd say your right on for a 4pm leaving if your figuring on stopping between 10 and 11pm, but if your kids can sleep in the car and you and your other half can drive at night, i would be more or less inclined to push through the night and wake them to the superise of breakfast near daytona, and the news "we'll see mickey before lunch time"
Just my suggestion as this is how i handled my recent trip in december, and how i plan on handling my next "family" trip in december of this year. My next trip is in a few days right after my wedding, and i plan on leaving monday the 18th at about 9pm and getting to disney for lunch.
Good Luck and enjoy your trip.
Chris