I don't think there's a DC store but they do free shipping. Takes about a day or two and arrives in the box freaking hanging. Expect tombstone shaped box at your front door.
I personally have one suit from them (copped from when they had an outlet open for a short period of time). I thoroughly enjoy them. For the price point, you won't find an OTR suit that will be better.
As for styling, peak lapel, one button, with jetted (no flaps) pockets is quite classic. A notch lapel or two button tuxedo would be tacky. Basically, if I were in your situation, I would definitely cop this exact one.
EDIT:
Yep, you money famb
http://us.suitsupply.com/en_US/store?StoreID=stores-Washington