I'm going to change my Peugeot into a light-duty off-road fixie (fire roads etc.). Would I be ok just grinding off all of the cable and derailer (click here for Sheldon Brown's explanation of spelling) hangers myself, or should I just pay someone to do it? Would it be possible to have it come out looking clean?

Thanks again...

p.s. where should I look for a 700c fixie rear wheel tough enough to handle some off roading?