Are you splicing them row by row (weft by weft)? You sould be able to re hand curl this wig first to see if you like the new crazy texture your creating.
I have the light copper red and am looking forward to getting the Pumpkin shade because I want that Orange hue (otherwise I'd use my own crazy copper hair lol).
Dark Copper Red is an option int he new wig as well.
It also seem Merida gets her cloak pendent from the witch.
Edit: Though I would share this little bit of information. In an article for Galaxy theater's in Canada they mentioned that Merida has 22 costumes. Not I would hazard to guess that also include variations on the distressed version of her outfits and as a child as well as I don't foresee the movie being that long to warrant it.