I got my bootup to a bare minimum and just had core services running, it wants system restore running and wanted a normal mode install. Your windows folder will grow by almost a gig, first the back up for the uninstall and then another backup of the install files.
It was pretty damn smart when it extracted because it automatically chose my largest free data partition on a seperate drive.
did the slipstream with nlite also and tested on a broken computer yesterday as a clean install
for an old ME computer sure boots fast