151 calorie deficit per day? That would take like 23 days just to loose a pound! Am I reading that right??? Um, I don't think going lower than that will be a problem at all.
I tried the 1200-1400 range to begin with and found that 1600 was better for me. You might do better but it won't be a bad thing if you find it to low to start with. We all have to find our groove, like Stella, and we're all a little different.