So a few quick thoughts from a very brief look through the list:
1) I think you're going to want spot removal more than board wipes. Board wipes are great for GROUP EDH play, but will likely end up hurting you more than your opponent (considering that you only have 9 creatures). It would be much better to take out their blocker, slide in the damage, and go from there.
2) Proliferate. One issue with infect decks is that they can get bogged down against an opponent who has larger defenders. Proliferate, specifically
Contagion Clasp and
Contagion Engine are marvelous ways to push through those last few poison counters when your creatures can no longer connect.
3) I'm seeing several of the staples for French (aka 1v1) EDH missing here.
Sol Ring? This is the biggest one that comes to mind, but definitely worth sliding in there.
4) I would also suggest putting in a bit more of a backup win-con. Whether it be
Phyrexian Obliterator or
Grave Titan or whatever, there will be times where you just can't get the infect in there to finish the job.
But honestly, if you wanted to build an infect,
Rafiq of the Many can actually work with
Glistener Elf for T3 and T4 kills...