I can appreciate the difficulty of brewing huge amounts of Bud, that are ALWAYS consistent in taste. That being said, just because something is difficult to do does not mean it is necessarily a good idea to do it... ;)
I just downloaded and started playing with a couple of programs, Beersmith and iBrewmaster. Beersmith just was not user friendly in my opinion. I really hated that upon creating a recipe it would automatically enter it as if I brewed it on that day. And the work around is to leave the "brewer"...