First 30-day water only fast

Hey everyone! I've been reading this forum for a few months now but I just joined today. I love this forum for all the advice and guidance I gained during two short Water Fasts I took earlier this year (one in January and one in February). The first lasted ten days and the second lasted eight days. I'm interested in the heath benefits that occur during longer fasts, such as scars diminishing and Acne clearing. I want to undergo a 30 day fast. Currently, I'm 5'6'' and 139.4 pounds. I'm in the healthy weight range for my height according to BMI calculators, but I have a smaller frame (probably due to my Philippine heritage). I've been as low as 108 without showing bones. So, I'm under the impression that the fast could be done safely, especially because I tend to hold a high body fat percentage even at a low weight. My percentage never went below 35%. Right now, my body is lumpy. I have 32 inch waist, but my lower stomach (below the belly button) is 38 inches around. The number on the scale does matter much to me, it's really the inches around my body (when I wear a bathing suit people can see a large roll around my lower stomach). It is so prominent that an ex-boyfriend even asked if I was alright. He thought it might be a tumor. So, I'm alright with saying that a small part of this is for fat loss. But I also hope to heal my Acne (I'm nearly 30 and have had Acne since I was a child). I also have scars from the acne and insect bites on my legs. Because of my olive complexion, the scars are dark brown and very unsightly. I also have some growth spurt stretch marks that I'm hoping will improve. I think I might also have a cyst on my head that I would like gone. I have a bad problem with gum recession on my lower front teeth because the skin that holds my lip to the gum was pulling at the gum and yanking them down over time. My dentist was able to fix the problem by clipping the connecting skin and grafting the gum. This will prevent the gum from continuing to recede but unfortunately, my pallet where he took the skin to do the graft isn't fleshy enough for him to completely cover the gum line. This means that the baseline of the teeth is still exposed. I also think I might have two mercury fillings. My teeth were also very thin for as long as I can remember. The teeth are semi-transparent. I realize that fasting might not be able to address all of these problems, but after reading this forum, I'm hopeful. I'm using this forum to share my progress and any concerns I might have along the way. I'm thankful for any advice.