dbilas and shrick cams... that's an expensive setup, but i'm sure it will be fun. i keep thinking of getting a set of regrinds for mine, but i'm already most of the way to having the turbo setup collected and i kinda have to pick one or the other.
make sure you look into the VW hydraulic lifters when you do the cams; search for posts by "1991 E30 M42" about them- both cheaper and lighter than the factory BMW parts.