setup sounds good but...1 plant??? hope its a female...if out of 10 that sprouted only your one broke soil then your germination technique was most likely flawed take special attention not to touch the tap root once theyve germinated and only burry them with just alilttle soil over them and the taproot facing down keep in mind they double/tripple size in flower and also i read in somewhere in here that usually the first to sprout and fastest to grow are usually the males of a bunch so dont count your eggs before they hatch maybe to much heat dryed up the germinated seeds as well make sure the soilmedium is saturated with just a sprinkle of dry soil over the planted seeds...get to germinating A.S.A.P.! best of luck