I did a cycle at 18, Cyp only 10 weeks. I'm on TRT the rest of my life now. Was it because of my stupidity, will never know the answer to that? My guess, probably not but never know. Regarding your 2 buddies that are 25 and are fine, that means nothing to you, shouldn't even if said it. If they are fine that is totally independent to what your outcome will be.
Anyway to your question I would definetly drop the Dbol. Really do not see any reason to complicate things by adding a second compound. Many, including myself feel Dbol is shit, done with mirrors, nothing but water that you will most certainly lose so why bother.
Don't have it handy, look it up but ausinite's first cycle thread is all a person needs to read for the answers you are looking for.
Sorry, in good faith I have to say it.....don't do it, you are far too young.