Tbh its not bad, You dont need a massive power house to be a good nas, It helpsif you are going to stuff it full of APPS . And I wouldnt say 1000w is overkill. I wish I had it in my build. "15x 3.5 drives on a 650" and I am using all the adaptors to make it work but still have the headroom for a rtx2060.
I also just built a back up server on the cheap for what storage is in it here