50+ hours? You must be a quick RPG-er! I had over 100 hours on the base game and over 161 with both DLCs!
I did the DLCs at the end, and it seemed to fit that they were played after the main story. I don't even know if you can access them before, to be honest, as I never tried.
You're right, I definitely grossely under estimated the time I spent on the main game and DLCs