*smirk* landscape or portrait.. documents should be in portrait layout ;-)... sorry couldn't help self.
Those are colour profiles btw, not white balance (tungsten, daylight etc). As Mt Spokane indicated it depends on the lights you're taking the pics under. As for colour profiles, use standard colour profile or use monochrome? they're documents after all. Or take in RAW and change the color post to suite your needs.
an all in one scanner might be more useful for consistency.