Hi, I'm thinking of getting a pitbike. I have narrowed it down to one bike in the end. @http://www.powersportsmax.com/product_info.php/cPath/33/products_id/15132. I don't know much about pit bikes, This is my first bike. So is this bike durable? easy to find parts? Can i find different fairngs for this bike? And can I put bigger wheels on? I know pitbikes are supposed to be small but I want a pitbike that won't look small on me. I'm 5'8 and weigh 125pounds, does this bike suit my needs? And I'm open to all pit bike suggestions (price max $700)