Welcome to medifast Jenn. My starting goal was to lose 95lb and go from a size 20 to a size 6. This would be the smallest I have ever been. So far I am down 40lb and 2 sizes. I know that I can go all the way on medifast. It is the easiest and most effective diet plan I've ever been on.
I also have 2 kids. I have a 7 year old and a 13 month old son. I am definately NOT in my 20s anymore.

Congratulations on getting your weight under control at such a young age. You will be a wonderful example for your kids.
It might help you to look at the Wonderslim products on dietdirect dot com. They are an alternative to medifast and they cost about 30% less. I switched to them after my first 4 weeks because I have to save every penny.
Good luck!