Congratulations on your decision and determination. And I agree w/ those who recommended a higher calorie count for you (although I'm NOT a calorie counter, so what do I know, right???
). I think at 1300 calories you'll be very dissatisfied and, as we all know, when you're dissatisfied you're more apt to give up.
Now, I'm not trying to dissuade you from calorie counting...BUT if you change your mind and would like to try South Beach, we have a lot of good folks over on the South Beach forum that will be more than willing to help you out and give you advice. I've been on South Beach for 4 1/2 months now and I've NEVER felt deprived or starved. It's been very easy for me to stick to (not gonna lie, though, those first 2 weeks are a little rough) and I loooooooooove my new way of life. Plus, the 58 pounds gone FOREVER (on SB...13 pounds were before SB) have made it all worth it.
Good luck on your journey. With determination and willpower you can do anything...and you have tons of people here on the site that will support you and push you to succeed!!!