Sounds like a plan!
We were planning to do a 4:30 a.m. departure last week for a first-time, direct, one-day journey to WDW. But we decided to maximize our planned Sunday night arrival by leaving a day early. We left at noon and made it to Florence, SC by 9:30 p.m. (607 miles). We departed the next morning at 7:55 and arrived at WDW seven hours later. So instead of arriving late Sunday night we arrived in the afternoon and managed to enjoy a "full day" at the MK until 2 a.m. that (Monday) morning! It was an extra day of vacation that we had not originally planned for.
Ah, those tolls. Since we live at the Jersey Shore, our hook up to I-295 avoids the NJ Turnpike tolls but we pay the following tolls heading south: Del. Memorial Bridge ($3.00), Delaware ($4.00), and Balt. Harbor Tunnel ($2.00). Of course, the outrageous $5.00 Maryland toll is added to the aforementioned tolls heading back north on I-95 (but no toll on the Del. Memorial Bridge crossing back into NJ).
Just swing by Maryland and pick me up.
I'll pay those pesky tolls!Disgal

) to return the BMW to their dad with a full tank of gas.
I can't remember the exact times, but I do know that we were out of DC before 7:30AM.

We plan to head out around 9:00 PM on Friday and drive as far as we can until a rest area calls our name. Then it's back up and on the road again with the hope that we make it to the Florida welcome center in time for some OJ - We aren't supposed to check into our condo until Sunday after 4:00, but are now talking about adding an extra Universal day so the hope is that we can hit Orlando and hotel it Saturday night, spend the morning and early afternoon at Universal then check into the condo at 4:00 after we pick up our Disney/NASA tickets.
We always stop at the Jameson Inn in Crestview, FL as our stopping point for the first night. There is a Cracker Barrel right next door. So, the family gets a nice meal for dinner too. It sure beats fast food. Then, we get up the next morning and eat the continental breakfast provided by the hotel and are on our way. We only have about five/six hours left until we arrive at WDW. Those last few hours fly by with the anticipation of our destination.