We will be in Washington,DC on a Wednsday, May 2 on our way home from Disney. I was thinking of visiting Mount vernon Estates from 8:30am-10:30am then heading over to Washington,DC from 11:00am-1:30am. Does this give us enough time to sight see in the MountVernon estates and sight see some of Washington DC and get out of there before rush hour traffic. Also, whattime does rush hour traffic start in the afternoon? We are trying to get home to CT that night. Thank you for your help