You know what? This kind of sounds like the 'two puppy' problem. Check it out here http://www.escapistmagazine.com/forums/read/18.73797fish food carl post=18.74801.853849 said:Seriously? This was done before and was the same problem in principle... sort of. This has been done before. In that thread people compared the problem to this. The answer isn't particularly complex.
/Irony.