How about you start from the beginning, which is learn how to germinate your seeds before you worry about anything else? If they don't germinate, then what does it matter if we talk about what kind of potting soil to use or what spectrum the bulbs should be or how often to water?
That said I hope you are getting lights that are anywhere between the 5000k and 6500k spectrum of light. People are 50/50 on which to use from all I've talked to. Some get a mix of different spectrums, some don't. Some use only 6500k, some use only 5000k, and some I've seen use 5500k. Basically since it sounds like this is gonna be your first grow, I'd recommend 5000k lights for veg, 2700k lights for flower, and a 24/0 cycle during germination and rooting, and then a 18/6 cycle for veg, and a 12/12 cycle for flower. If you want to use MG potting soil, keep in mind that it's great for a newbie grower that doesn't have the time or money to buy fancy nutrients and test your soil and water run off all the time for ph levels, but you must remember not to water it but every 3 days on average, otherwise the time release nutrients in the miracle grow soil will burn the roots and kill your plant(s), unless you're using MG seeding soil (which I believe has little to no nutrients in the soil, but you'd have to check the box). But also keep in mind that you shouldn't just pop a few holes in a bag of soil and throw a few seeds in and hope they grow, cause they more likely not germinate that way. The best thing to do is get a large pot per seed, say 6" or 12", that way you're less likely to have to transplant to a larger pot later on (unless the plant gets that big from topping the plant, or even just on it's own). There are a bunch of videos on Youtube that will show you how to germinate a seed using paper towels and water, and from there you just plant them in your pot with your soil, a little water, and wait for the first sign of life to sprout out of the soil. Water them when the soil is dry to the touch about an inch below the surface, and only water them until you see the runoff water below the pot (I use a pie tin to catch my runoff below my pot).
Basically you're doing what I'm doing, except........I'm using a clone I got as my first time patient gift at a dispensary, and you got way more powerful lights than I, and I'm also only doing a single plant grow. I'm using four 14w CFL's at 5000k spectrum, so I'm getting about 250w equivalent and 3200 lumen output.
Keep in mind you're asking for like months worth of knowledge all at once and perhaps you should digest each phase of your grow as you grow and learn as you go along. I find it easier myself to focus on what I'm doing rather than what I need to be doing 2 months from now when I'm ready to flower my plant (or it should be ready about then).
Good luck!