I'm gearing up for getting my yard in shape this spring and I was in the John Deere Landscapes/Lesco store today. I'm in North Florida(Jacksonville) growing St Augustine grass. I asked the guy at the counter about when to apply a pre-emergent and he said Feb-15th. That sounds about right to me. I also asked him whether to spray or to put down a granular version. He recommended a granular (0-0-7 with dimension) since I was using a backpack sprayer. Is this my best option or should I spray? With what if so? I was planning on using Mansion with a spreader/sticker for post. He also recommended a 24-2-11 in march then in april a 18-0-9 with allectus and again in June. Is this a sound plan? Would you modify it?