There's always a chance, but if nothing had even sprouted yet I wouldn't worry about it good strain or not. You could alwas see what happens while you grow another plant, it's completely up to you.
As for the soil, don't get miracle grow or something generic. Many people use many different types of soil. I know many people use Pro-Mix and it's different variations (Organic, BT, etc.) and I use Pro-Mix Organic myself. A solid soil mix to use is 1 part soil, 1 part vermiculite, 1 part perlite and 1 part earthworm castings. All of this should be available at serious gardening stores. Keep in mind, you DON'T have to go organic at all! You could use chemical fertilizers and soil *cough* BC Bud *cough* but it all depends on what your priorities are. I like to watch what I'm putting in to my body (although I need to stop smoking cigarettes) so I go organic. You may not care, so go for it! But know this, whether you grow organic or not, Do NOT plant in plain soil/soiless mixes. Use the vermiculite, etc. as well.