Substrate

I wouldn't say this is a living soil... but it's an amended soil at the least... and I'm hoping you'll do all right with it. The soil you've chosen has an NPK of 4-1-1 while the nutrients you've chosen have an NPK, I believe, of 3-2-2. This is going to be pretty "hot" for an autoflower at the beginning of its life ... they generally don't like nor need ANY nutes at all for the first couple of weeks which is why, when I grow in soil, I always use ProMixHP which has no nutes whatsoever in it - only wonderful mycorrhizae to provide a good boost for the roots. With this, I get to decide what nutes, when and how much to give my plants... I control their "diet." If you think, which is sounds like you do, that you can put together some soil and some nutrients and put your seed in the pot, give it a little water now and again and have a good grow all the way to harvest, you may well be disappointed. Cannabis needs specific nutes at specific times - and autoflowers are the pickiest and most demanding of cannabis to grow. I guess I'm failing to understand why it is you chose a vegetable and herb fertilizer as opposed to a cannabis fertlizer... but if the seeds are now in the soil, that's basically a fait a'compli as autoflowers do not tolerate transplanting well and it isn't adviseable to do so, especially if it's just a small seed with a tap root - the danger lies in tearing/breaking that tap root which would kill the plant. When your plant moves from the veg stage to the pre-flower and flower stage, you will have to reduce the nitrogen they are being given and add bloom nutes which are higher in potassium and phosphorus... and MAYBE, by the time they are in flower, the soil will be depleted of the nutrients and the fertlizer has been used up... if so, then you will have a shot at giving it some good bloom nutes at that point. But how you tell whether or not the nutes are used up or the soil depleted is not something I know. I wish you well... You had messaged me about soil grows - you should go read a couple of diaries to see what growers need to do, the problems they encounter and the difficulties you may face. Good luck! At least you'll learn a lot about growing cannabis!