On Monday (Aug. 2) my chicks will be 7 weeks old. I have enough starter to get me to then. I already have a bag of Flock Raiser. Hubby is upset at paying $5-$6 dollars for a five pound bag of medicated chick starter. (when an entire 50 pound bag of Flock Raiser is only $12) The stater I feed says to feed it for the first 8 weeks. Would it be ok to stop it at only 7 weeks or should I go ahead and feed them the extra week of the medicated starter?