IndigoFirebird: I'd go with a simplicity pattern for the jacket, if you haven't already found one
(
http://www.simplicity.com/p-2184-boy...and-pants.aspx) It might also be easier to start thrift store shopping and if all else fails just dye the shirt the proper color
As for the wig, have you tried Arda?
http://arda-wigs.com/Jett.html
It looks pretty flat on the head, but it's got more than enough volume for those David Tennant-esque hair flips in the front if you check out the costumer gallery
