i'm not insulting you at all. i apologize if it came out that way
#1 you're already very heavy and big, not saying "fat" probably pretty damn bulky/powerlifter build. dianabol is gonna bulk you up more
#2 Usually people don't mess around with anabolics unless they are under 15%, closer to 10%bf because they results are much more pronounced
#3 Why not use injectables? Easier on your body, you can run them longer, and the results are easier to keep. Plus test will help you slim down
I, again, apologize for the tone, it's the internet and can be read that way. I'm saying that at your age you could probably get on TRT if your doctor is familiar and comfortable with it, or inject test and do a 3 month cycle with greater and more maintainable results.