Mark, looks like you're all set for your trip and you've done the SFRA training. Just adding this for others who may read this thread -- Washington DC SFRA training is required for anyone who flies within 60 nm of the DCA VOR, not just for flying into the SFRA. Stafford is within 60 nm of DCA, so the training is required to operate there.
RV-8 under construction as of Sep 30, 2012
Tail kit completed on Feb 8, 2012 (180 hrs)
Wing kit mostly completed, fuselage under construction as of March 6, 2014 (750 hrs)
Paid up for 2018