You've asked a bunch of questions, so I broke them down and will answer what I can and hope others help with the rest:

Amount of money spent lobbying for DOMA

still looking

Addresses of major players
Christian Coalition of America (pdf)
James Backlin
2406 Dominion Dr. #3B
Frederick, MD
21702

Traditional Values Coalition (pdf)
Andrea Lafferty
139 C Street SE
Washington, DC
20003

Big name/celebrity supporters of Occupy Boston
Amanda Palmer
c/o Girlie Action
243 W. 30th Street, 12th Floor
New York, NY
10001

Russell Simmons
Global Grind Digital, Inc.
512 Seventh Ave, 43 Fl.
New York, NY
10018

Suggestions for other financial/love themed recipients of valentines
thinking about it