I think using organic fert. is a great idea. There are so many benefits...no burn potential, increased microbial activity in the soil to eat away that thatch, less N runoff. But there is the cost issue too if you are trying to get a full lb. of N down. I'm thinking of using Nitroform 34-0-0 next year. You can put down 2-3 N in one application and not get burned. There is that initial cost again $28/50lb. bag, but hey...your done with granular applications for the year.