Hi guys and gals. need to place an order for some more feeder rat tonight. My ball is 320 grams right now. been feeding f/t weaned rats. They seem to be a good size right now but I am thinking of a few months/weeks ahead.Weaned are 30-40 grams and the next size up is 40-65 grams. so I am thinking maybe 10 weaned and 15 small, what do you think? with the cost of shipping I like to buy about 25 at a time,thats around 6 months worth.