My cellar (no pix atm)

Hey guys.
I think I might go Nirvana this time. I'm going to purchase Aurora Indica ( Afghan x Northern Lights ) It says the yield is about 300g/plant wich is a very nice turnout for such an indica, I only want to grow Indica because my cellar wich I am growing in isnt the biggest in the world. If I grew sativa in there I could only have about 10 of them. The Indicas are going to be placed on shelfs circling my room with a light drilled into the bottoms of the next shelf, hanging to produce light. I have 2 shelfs in there 1 is directly on the floor, the other is about 1.3m above that one and it goes around the room such as :
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|| || ( More room in them iddle of course, about 2.5m <----->.

On the lower shelfs I am going to use them for either clone growth , or for sprouting my seeds. As the plants in my cellar get bigger after the first 3-4weeks, I am going to turn on my 250w MH as they veg further. Once they are flowering I am going to be using 2 to 3 1000w HPS lights ( Roughly 20-25 plants ). Sea of green method. God damn I wish I could buy a fucking digital camera... Would make things way more easier, thanks guys and post any of your ideas/thoughts here.
I am going to purchase these Aurora Indica seeds from :
http://www.drchronic.com/products.asp?recnumber=472

Vent system : I want to know what you guys think of my "plans" to fix up a ventilation system, circulating in/out fresh air. For the screen for the air to go there Im going to be using some charcoal and some filters, like a sandwich :D : Filter / Charcoal / Filter / Charcoal / Filter / Charcoal / Filter.
Here's a picture of my basement and where my cellar is located and how my ventilation system could be done.

It should work just don't let the vent pipe runs get to long or the air will not make it through. Straight hard vent pipes work better for long runs then the flexible duct pipe does. There is less airflow restriction in the straight pipes then in flex pipe btw. Just an Fyi for you to think of.

ah, that is a picture of my basement, and the roof in the basement is that pushup kind of roof that they have in schools. Im thinking I might just open one in my cellar and then put the pipes going threw my roof and out my backwindow under my balcony.

How long are the runs going to be?

I posted this per your request.
http://boards.cannabis.com/showthread.php?t=26523

From my cellar to my window in my roof is about a 3.5/4m length, shouldnt be that difficult.

Just make sure you have plenty of air movement to start with or just use the blower as an inline one that will make the run shorter. Not quite in half but place the blower 1/4 of the distance.

Ah alrighty. Im going to get it done this weekend. For my next grow after my soil Im planning on doing hydro, and I plan on building a box 2m x 2m x 2.5m filled with water and use a generator to pump oxygen into the water and float my plants. About how many plants do you assume I could fit in there with 2 1000w HPS hortilux and 1 1000 MH.