New Goal Weight & Calculation

I forgot to post that my goal weight has changed.  Originally I was planning on my goal weight being the 'ideal' weight of 150 lbs based on my height and age.  However, the is NOT realistic in any way.  When I went for my consultation, they explained that I would lose 70% of my excess weight, therefore that becoming my goal weight.  So here is the calculation they used for me:

My highest weight = 280 lbs
Minus My 'ideal' weight = 150 lbs
The difference = 130

130 X 70% = 91

280 - 91 = 189 lbs

Personally, I'm aiming for 165 lbs, so that means I have 43.5 lbs left to go.

At the rate I'm going at losing approximately 0.5 lbs per day, I don't see any problems reaching my goal.  Healthy eating habits along with my regular exercise at the gym, I'm going to make it!!!

Cheers :D