I just activated the wyeast package and I am planning on doing a yeast starter. I am going to put it on a stir plate for approx 24 hours, then on to the fridge for 2 days. At that point i'll decant and start to warm the yeast. The question is when I start my boil can I use some of the unhopped wort to step up my starter? It will be a 60 min boil and then probably another 30-60 mins to cool.