Tezz-Blade

So this week I have been fooling around with a sweet deck created by Simon Bertiou, found here. I thought that I would give you my take on it based on Simon's recommendations and my own personal card availably.
So heres my list:
   2 Celestial Colonnade
   3 Contagion Clasp
   2 Creeping Tar Pit
   4 Darkslick Shores
   3 Doom Blade
   2 Drowned Catacomb
   4 Duress
   1 Gideon Jura
   1 Hero of Bladehold 
   2 Island
   4 Marsh Flats
   1 Mortarpod
   4 Plains
   4 Preordain
   4 Seachrome Coast
   3 Squadron Hawk
   4 Stoneforge Mystic
   2 Swamp
   1 Sword of Body & Mind
   1 Sword of Feast & Famine
   4 Tezzeret, Agent of Bolas
   4 Tumble Magnet
  Sideboard
   2 Celestial Purge
   1 Day of Judgement  
   2 Flashfreeze
   3 Inquisition of Kozilek
   1 Jace Beleren
   2 Jace, the Mind Sculptor
   2 Kor Firewalker
   1 Memoricide
   1 Sun Titan
I feel like this is very well positioned for Regionals this weekend, and possibly the next few weeks with some proper tweaking. Good luck all.