What's your ideal body weight?

So I've been calculating what I'm supposed to weigh, ideally. The BMI isn't very accurate so I've been using Tannhauser's Formula instead. 

For Caucasians:

Ideal Body Weight (in kilograms)  = height (in centimeters) - 100

For Filipinos

Ideal Body Weight (in kilograms)  = height (in centimeters) - 100 - [0.10 x ( height (in centimeters) - 100 )]

I'm still a bit overweight, given this method. I hope I'll be able to diet and exercise this christmas season.