I'll be going to supernova on the 11 of this month and as a last minute decision I have decided to cosplay as Misa Amane

But because I don't have much time I am just using stuff of mine that looks like something she would wear. The dress I have chosen is
http://24.media.tumblr.com/tumblr_m6...t1x2o1_500.jpg
Is that a good one for Misa? I also have stockings, stocking arm thing, a Death Note and a plastic apple too
Because of short notice I can't buy a wig off the internet so will a cheapo wig from like Spotlight or something be good enough or will I just look funny?