When is the earliest I could possibly start germinating Lowryder #2 seeds for outdoor guerilla grow?

I have seen a lot of scary, hope destroying information around and also some people just saying 'they will grow grand, sure'. I'm a first time grower and I'm not looking for any miracles for now. Even if I made an eight of good bud per plant - as riddiculous as it sounds I know - it would be a massive, massive money saver for me and much higher quality bud than what I am used to.

How soon could I start? Should I use the soil where I am putting the plants or throw some bought product into the hole? What are the realistic chances of getting any bud at all without the plants dying ... and how soon could that happen?

Thanks for any advice.