im in the same boat as you. i plan to lose 100lbs too. i weigh 243 now and by this time next year i plan to weigh 135-145lbs. i plan to lose 25lbs every 3-4 mths thats 2-3 lbs a week. i wish you all the luck and blessings this "trip" has to offer. remember God never gives us more than we can chew. this might come in handy. God bless and i will be praying for you!