I generally only use rice hulls when I'm either using a sticky adjunct (e.g. wheat or rye), thick mash, or when maxing out my mash kettles grain capacity. These are all times when you would need to worry about a stuck mash.
As stated by the others, 2# is way too much.
Keg1: Belgian IPA
Keg2: Wee Heavy
Keg3: Vienna Lager
Secondary: Rye Wine, Gluten Free Saison
Aging: Bourbon Barrel Imperial Stout w/ Brett, 2009 Lambic, Kriek, Framboise, 2010 Lambic, 2011 Lambic