Suggestions before I proceed further with my ESO journey...

I've been playing ESO for just almost a year now and I already finished Morrowind chapter and the base game (up to Molag Bal fight.) And I just recently purchased Greymoor DLC including Summerset, and Elsweyr.

After Molag Bal, I was taken to new Main Quest, Caldwel's Silver to experience the other alliances. Would it make much more sense to the story if I complete Caldwel's Main Quest first, or is better to finish the DLCs first then go back to Caldwel once done? I'm from the Dominion by the way.

I'm just really excited to do the DLCs and I'm thinking Caldwel's Main Quest might take much more time.