you will need to monorail ride or boat ride from Epcot. Boardwalk is about a 10 minute ride, one way and you have Flying Fish Cafe there.
If you take the monorail then there's California Grill at the Contemporary or Citricos at the Grand Floridian, as well as, Narcoossee's. I love getting the whole lobster at Narcoossee's.
If you really want to stay in the EPCOT park, then I would choose for 1 TS credit Coral Reef, Teppan Edo, Le Cellier, Chef de France, or Tutto Italia. High on my list are Le Cellier or Teppan Edo. Le Cellier is the toughest for getting ADR's.
I mix it up on each trip to go to different places; except, for a few favorites.