I attempted this walkthrough on a Win2k8 R2 Standard x64 (7100) using Win AIK Beta 1 and during the Update of the deployment point ran into an error.
DISM was trying to find: C:\Program Files\Windows AIK\Tools\PETools\x86\WinPE_OCs\winpe-scripting.cab but the WinPE_OCs folder didnt exist, I had a WinPE_FPs folder with winpe-scripting.cab inside, so I made a copy of WinPE_FPs and renamed WinPE_OCs and I re-ran the deployment update without errors.
Just an FYI for anyone else that may attempt the same scenario.