Do you already have reservations for Disney World? February break can be a busy time there. Are you planning on staying in Fort Wilderness - the Disney World campground?
I would avoid the GW Bridge, take the Tappanzee.
I saw in another thread you have a Class A? Have you planned where you are going to stop along the way? Some people drive none-stop and switch drivers... that sounds like something college age kids would do! Would not be much fun for family.
A long driving day will get you to around Georgia, then the second day will be a long day of driving to get to Disney World. These would be long hours of driving, so you may want to take an extra day for driving. 3 days down, and 3 days back up. That is 6 days, and you want at least 4 days in Disney (5 or 6 preferably) so hopefully you will have a couple weeks available?
If you can give some more info about how many driving days you want and where you will be staying (both in or near Disney and along the way), you will get more detailed route information.
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2021 F150 2.7
2004 21' Forest River Surveyor