I'm not very knowledgable on this, but it would seem that the project would be loosing focus if you did this? Or else its not been thought through and you're not sure what you're after, did you not get her resprayed already?
Don't really see the point of massive diameter or width rims.
As per Muad - If you want the rims to stick out for wide arches - use proper motorsport type spacers.
No point in building a turbo for performance and then sticking 12 inch rims on a FWD 250bhp car.