Others have given some feedback here. Having been to four Disney resorts now, I can say that the DL park is the best theme park in the world. Better than MK. There is of course nothing like Epcot at DLR or really anywhere. I myself have always held DHS as my second favorite WDW park. But that was while they still had LMA and GMR. I am afraid the new changes will change the vibe of DHS.
I liked AK and Epcot and would have a hard time saying which I like more. We can call it a tie for 3rd.
DCA has a DHS feel to it (the old DHS) of LMA and GMR. So it may or may not work for you. But you just have to see World of Color. That is unlike any Disney show anywhere ever. My favorite. But my DLR brethren tend to prefer Fantasmic to WOC.
The Paint the Night Parade was at DLR and is now moving to DCA in April. PTN is the best Disney parade ever IMO. Most of my DLR brethren will agree with me on this except for the most nostalgic of Electrical Parade lovers LOL.
So in two months DCA will have the best Disney parade and the best night time show of all the Disney parks.
So, yes, you will miss Epcot. No way to slice it. But you will have some new things not offered at WDW which will hopefully make up for that!