Im from the Philly suburbs, so Im looking for recommendations from those who live nearby (I noticed that Sharadoc is very close

).
We want to arrive in WDW by mid-day on August 20th (a Saturday).
I have a couple of different scenarios. Any thoughts on what might be a better strategy and if these are realistic:
- The other thought is driving about 5-6 hours on Thursday after work (leaving home 6:30-7 pm) to get past Richmond, and then trying to get to Orlando by Saturday night, but making a hotel reservation about 3 hours out in the event of unforeseen circumstances (traffic, weather, etc). We can always cancel the reservation if its not needed. Downside there, of course, is an extra nights hotel cost.
We now leave Rhode Island mid-day Thursday, as soon as my two girls are done with school so as not to miss another day. We will drive about 7 hours and be in Northern Virginia. So easy to get a good start the next morning! No delays in doing "just one more thing" before leaving home!
- The other option is taking the 81/77/26 route, but that does seem to put me about 100 miles out of my way. Do people often take this way from the Philly area?
Shoot, we take that route from Rhode Island. I wouldn't do it any other way. The only traffic we hit is on 95, be it in CT or GA and FL! Having been in wall to wall traffic in NYC at 2 a.m., with NO breakdown lanes at all, we see no need to put ourselves on 95 any more. We want to enjoy our drive.
Also, how much driving time is typical for the Philly-WDW trek?
We'll be leaving Orlando on August 30th (a Tuesday), but right now I'm more concerned with getting there than going back home...
Thanks!