See the thread here.
http://deckbox.org/forum/viewtopic.php?id=9348
You guys are basically attempting the same thing.
Some notes about your deck. I'm making recommendations to improve the deck $$ not with standing. Lets be honest UR is a control deck. You need to control the board, by removal and the occasional counter. Your board presence should be minimal.
Lands. You need the non basic lands, steam vents and sulfur falls (?) These will help you so much. Gates can be a huge tempo losss and should only be played as a last resort right now. I'd probalby also go up to 25 lands.
Spells. You need more draw. Auger of bolas x4, think twice x4, should be in here especially if you're on a budget. Draw draw draw. You won't be able to protect your creatures if you don't draw the cards you need.
Sweep sweep sweep... mizzium mortars... can't say it enough, if you're playing 2 color UR you probalby need 3-4 mizziums, if not bonfire of the damned too.
Counters... dissipate is just better than cancel and honestly I wouldn't run more than 4 counter spells in today's meta. Maybe a couple more on the side for the control mirror match.
Creatures. playing blue? no Ætherling? o.O???? Ling is the strongest bomb creature blue can play right now and he's really not that expensive. Picking up a couple of these will do wonders for the deck. He's better than nivmezzet by about a billion. Guttersnipe looks good, but in truth, he probably won't work out that well. Give it a whirl you never know, but tapper your expectations of the concept. Auger of bolas needs to be in here as well.
Super Friends. Planes walkers are big threats in these decks. Jace Architect of thought, tamiyo moon sage, ral Zerek.
Cards to consider removing.
Bluster squall - you need to remove the creatures. tapping them does next to nothing.
Thunderous Wrath - needs to be more mizzium mortars. If not that, then cheaper sweeapers can be, street spasm, rolling thunder or cyclonic rift. Not great, but better than this card.
Blast of genius/Spell twine/izzet keyrune - need to be think twice x4
elixir of immortatlity and chromatic lantern - any of the other spells i've suggested would just be better.
Ultimately, for this type of deck you want to be playing White Blue - splash red. Supreme verdict, Sphinx's Revelation, Azourius charm.
Look up the winning american control deck from SCG Dallas. It's a good version of this kind of deck. It protects it's threats like assemble the legion and planes walkers.