i certainly wish the people would be more specific about quantities on here. where i live, and get dope, a bag isn't a bag, it's a balloon, and it's .5g. when posters here on BL say a bag, i automatically assume that they're talking about .1g, because that's the most common slang used here. but, 1 bag could be anything, depending on the area, the dealer, the circumstances, etc.
if people would say; i use ~.1g a day or 100mg/day, and would give the duration of their habit, there would be a lot less guessing and arguing here.
to the original poster; if you are taking 100mg of h a day (actually 20-30mg of heroin, more than likely), then yes, klonopins will help mask the discomfort you will feel when you stop using. the first day after using you will be very tired (if you've been using for any time). after that, it's all of the other fun symptoms. k-pins will help you relax and possibly sleep. good luck.