Sounds like a good plan - but what does the new tablet have to do with finding a seed in a bag, just wondering (I assume you mean a computer tablet - hopefully you got a good deal on black Friday)?

So what are you growing in - closet, cabinet, some other guerilla grow setup? If I were you, I wouldn't bother adding soil from the ground to whatever organic mix you are putting together. Stuff out of the bag has much less chance of having dangerous bacteria or other bad microorganisms in it because it comes from a controlled location, not the "wild frontier" of the back yard. Not worth that risk and the soil from the backyard is probably not adding anything at all that is more beneficial for your ladies than the bagged soil, which should be engineered for maximum benefits.

So have you germinated your seeds yet? I'm also growing with an LED setup in conjunction with CFL/T5 lights, so I am interested in hearing about your setup and how everything goes for you! Good luck and keep us posted!