Two days is enough time to do Epcot, though you may be rushed if you watch every film and linger in every shop in World showcase. If you just stick to rides and the big ticket shows (Honey I Shrunk the Audience, American Adventure), you'll be fine. I might even suggest avoiding the morning EMH, because the park will be extra crowded for the rest of that entire day. Evening EMH doesn't tend to overcrowd the park until later at night. You'll find that you can get more done on a non-morning-EMH day in a park overall, than a morning EMH one. Plus, if you're like me, it's a real drag to get up an extra hour early on my supposed vacation!
I'd just arrive at 8:30am on your first morning at Epcot, so you're ready to roll at the park opening. Break right once you're past Spaceship earth, and head for Soarin' (just follow the mob!). Get in the standby line, ride it, then grab fastpasses for a later return on your exit (they should be handing out FPs by then). Cross over to Test Track, and ride it. Then do Mission Space if you want to (shouldn't be too crowded yet). By this time, you should be ready to return to the Soarin' FP line - if not, do TT again. Then do Soarin', and the rest of The Land.
That takes care of the big-ticket, long line stuff at Epcot. Enjoy the rest of the morning in Future World, seeing what you want to. You should be able to knock off all of FW by the afternoon. Alternatively, you can do the West side of FW (Seas, Land, Imagination), then walk to World Showcase around lunchtime and go counterclockwise around the world. Since it's lunchtime, you can hit some F&W booths too. See as much of WS as you can, eat dinner at your 5pm ADR, hit some shops and maybe ride spaceship earth, TT, or Soarin' again on your way out of the park.
On day two, arrive in the afternoon and hit what you missed the other day in Future World. Then go to WS starting in Mexico, and work your way clockwise around WS. Mexico and Norway have the only rides in WS, and really only the Maelstrom will have any wait in line. During the evening EMH, you'll be able to ride all of the popular rides and attractions, but it may get crowded. Ideally by now, you'll have done every ride and the major shows, so you can pick and choose what you want to repeat.