I have tried edging for three years and simply found that it doesn't work. I go back to the O in PMO again and again. Maybe different for you, but I find it's impossible to start at M and not reach O, so I don't masturbation to begin with and I do suggest the same for you.
I also find that you claim that there is no overdose in pornography use. I beg to differ. At the height of my 12 year addiction to porn I was using porn 3-4 hours a day for maybe 3 months straight. I was lonely, as you constantly post, and committed a detrimental parasuicide where I barely escaped death. Now, one might feel that using porn doesn't instantly cause death - say like alcohol use. But, we all here can acknowledge that alcohol use is through the digestive tract and our problem with porn is through the eyes, primarily. Seeing that these two are very different, it's easy to see that, indeed, porn use has a different overdose type than a brick and mortar addiction like alcohol. After using the computer daily for 4 hours, I had such low self esteem (a side effect attributable to addictive porn use), that I thought I be better off dead. This, to me, is an overdose of the substance if there is a clear pattern of use porn and them immediately want to not exist, loneliness, whatever descriptor you want to put there.
My continual advice for many years, seeing that I have gotten 6 years porn-free, is to look at it like a Football player. He falls down, he gets back up, and he falls down again and he is back up again. We need to see this as a continual chain of progress in recovery and not a idealized version of ourself that suddenly doesn't fall down anymore or doesn't have to think about avoiding porn ever again. GET BACK UP and I feel we earn the respect of this porn addiction. It's saying something like: "whoa, not messing with him." I have fallen countless times, probably about 12 good ones with significant amount of time away from porn. 3 months - 2 years each time. I scared the shit out this addiction because I refused to stay down and I suggest you do the same. Good luck.