Thanks for posting the complete parts list, Tim!
Total cost from Tischer for these parts is $5920 (for E92). You could probably save a ton by getting replica M3 mirrors, sourcing used bumpers/hood from the forums/ebay, or from a local wrecked E92 M3. The biggest cost is the hood! Other than painting, and welding the rear quarter panels, this can be a summer DIY project.
One thing that this list doesn't include is the exhaust, which can also be found easily.