You're gunna get mana screwed so bad with this deck... sometimes it's better to have a two color sliver deck so you can actually play them.
Permalink
I personally think the land is messed up and you need at least 20...
Maybe add lightning spark for a better mana curve and take out meteor shower or something since it has XX in it's mana cost.
They recently did an article on magicthegathering.com about a helix pinnacle deck on building on a budget. You might want to check that out to get some ideas.