I did the draft anyway just to compare with you.
I cut out the land to make it easier, but I am playing 17: 9 islands, 8 plains. I saw that black was open so I can see how you went into it. I just almost never draft it because of competition from infect drafters for the utility cards. The computer doesn't think that way though, including a joker who opens Tezz and then drafts red.
The deck I drafted could definitely 3-0 an 8-4 queue with only average luck. Yours has a stronger removal suite; mine seems more consistent and with better men.
I think three mana Myr and 17 lands is overkill when your curve tops out with one 6cc card and no real mana sinks. I'd cut one of the Silver Myr for a better card if you drafted one.