1. Well, the enviromental conditions are ideal for the seedlings, but imagine if a tiny snail comes to your garden and eats a little greeny! Tomorrow, the snail eats an another Or they can be trampled by larger animals, and other weeds can suppocate them. Nature is quite dangerous for them until the are big and strong enough to fight, or at least survive these "enemies". I used to grow seedlings in a cultivator outdoors so they are well protected and adapted to the climate. May is a fair sowing date, I read an article that recommends to sow by June! Last year I started five seeds at the middle of June due to personal problems and - from four females - I still managed to harvest enough bud to last until next year harvest.

2. For any plant - not just marijuana - the most effective feeding method is to plant them in good soil and fertilize only to compensate certain deficiencyes. And don't bother about the cash, fertilizers are quite cheap if administered in the proper dosages. With one bottle, you can fertilize a dozen plants every summer for years.

3. Cannabis is just a weed, and a very strong one. It doesn't matter how you plant them, they'll find upwards by sensing gravity, and growing the opposite way.

4. I don't understand this. Just planted with white tails?

5. According to the wind, pollen can travel great distances so you can have a sinsemilla garden or a seed crop, not both but don't grow seeds. It is best to order seeds from seed banks to get the best of the strain. If you're growing a stabilised, inbred plant they will be weaker with every generation. If you're growing a hybrid plant, offsping will grow to different phenotypes, most of them will be very unlike and weaker than the parent plants.

Hope I helped you
Have a nice crop!