its an interesting idea and I think it has some possibilities but from a purely competitive standpoint I think you have some trouble as the deck stands right now. So while it may work as is for a kitchen table type setting I'll be discussing alittle more of a competitive mindset.
I would personally break it down into three key issues.
1) Your Mana Base
2) Your Card Cost
3) Your disruption
Your current mana base runs no shocks. While this is not necessary in a mono coloured deck given that you WANT to be hurting yourself anyway Shocks are a must. Right now is a good time to get into them as they will be about the lowest they'll ever be. For similar reasons City of Brass or other pain lands may be worth while if you want to spread into the two color pool. Two colors opens up alot for you and it isnt that hard to pull off in modern so I would encourage you to try for it. Finally you're running what amounts to Black Tron but you dont have Expedition maps to fix your lands. You really want Expedition Maps to fix your lands.
Your average CMC is 4 mana. While this could work if you get your Tron up its still tight. you're competing against stuff like T3 Karn so alot of what you're trying to play doesnt really stack up too favorably. I would focus on coming up with ways to stall out the game and then use the tron to win instantly.
Your Disruption is limited. Your opponent has more or less free reign of the board until you start getting your tron stuff off and even than your disruption amounts to "I do alot of damage" and "I regain my life." Black has some good removal and so does white I would recommend going into a W/B type deck.
Your points are all good, I wouldnt bother with Darksteel Forge since it doesn't protect against Exiling or sacrificing effects which are quite popular and doesn't further your game plan any.
I would look into the following cards.
-Path to Exile
-Victim of the night
-Go for the Throat
-Expedition Map
-Angel's Grace
-Isochron Scepter
-Profane Command
-God's willing
-Killing Wave