Nice one, i was looking at that before didn't realise that was accoustic. what do you think about using the autocob's? if you dont mind me asking what do you use?
I use 3500K Timber lights, they are super close to the autocobs, almost identical in tech specs. I have had some issues getting used to them, getting distance correct and not burning up plants. They are powerful lights! Make sure you have a dimmer with whatever cob's you choose. That is neccesary as far as I;m concerned. Another issue is calcium/magnesium deficiency. I hate using calmag because it plays havoc with pH in hydro. SWhen using cob's though, you have to use it some. Honestly, I'm happier with my old blurple lights because they are so easy to use. The cob's are better in every way, maybe too much better.
I almost got the same tent you are using too. I like the Secret Jardin stuff, best out there. If you are going organic I suggest starting early preparing your soil. Organics take a long time 'cooking' to get best results. If this is your first grow, I would suggest being easy about the organic rule for a grow or two and don't feel bad to use some less than organic nutes. Lots of people are getting GREAT results with Megacrop, I like Green Planet, Remo, and Advanced Nutrients. AN is the cheaper of the three.
About the water, tap water is fine as long as you let it sit out and evaporate off the chlorine overnight or longer. Just make sure the pH is set before you add nutes, and check it again after it's all mixed up. You can never check pH too much, it is the root of all evil.
Don't worry about the duct either, cheap is fine. The noise comes mostly from the fan itself and not the ducts. There is no such thing as a silent fan. I mounted mine on a cut out rubber yoga mat on a board with another section of mat on the bottom. This cut the noise in half. You probly wont need an air pump if you stick with soil, but the trick to getting those as quiet as they can be is to add 6 feet of tubing to the intake.
Good Luck, and welcome to AFN.