Losing weight is of course about calorie restriction. However, it is also about our bodies being "happy" and get what they need. You have a good chunk of weight to lose, and your body does need quite some calories to run at the size you are now. As you lose weight, it will be less and less, but if you want to KEEP losing weight, you might want to be a little closer to your RDI. I would recommend that you maybe shave off another 500 calories from what Fatsecret recommends, but generally not more than that.
If you go too low for too long time, then you will end up stalling, which is a royal pain.
Why not live a little, have some fun while you are losing weight, and enjoy that you can actually have the calories?
Trust me, you're gonna wish for them later, when you are closer to your normal weight and your diet will be much more strict.
I myself started even heavier than you, and had trouble eating all the food, but even when I felt I ate a LOT, I kept losing weight.
Mind you, I always went 500 calories under my RDI.
Also, if you SHOULD stall, please come see me. I have some trick to get you going again.
"Losing weight is never about eating as little as possible"
"Eating enough, moving more, not eating stupid s**t = losing weight."
"Do. Or do not. There is no trying."
- Master Yoda.
I started my weight loss journey on October 4th, 2010 - and this is what I have accomplished so far: