Advanced Nutrients difinitely worth the money BUTTT you dont need the whole product line.
Get the base
A&B Grow/Bloom
Big Budz
B52
Overdrive
I have about all of their product and didnt notice a big difference adding more than these..
The Super Blue Bulb is an excellent choice as well. Way better than a Sylvania bulb.
2x 1000w air cooled, exactly what i am actually running... I'd go hydro but remember, a good soil grow will harvest just as much as an hydro grow will. You can setup a cheap drip system for soil grow and you will most likely harvest the same you would have if you had gone hydro.
Do you plan using the whole 12x12 with 2000w of lightning? I think 12x12 most likely need 4x 1000w OR at least 4x 600w