Prof Evil...

I know you are anxious to get started, but think it thru from germination to harvest.

You need:

Good Light 18 / 6 (7)days a week.
A grow room or grow closet.

If you just want to grow a tree in your room and have some sunlight from the window to grow it, you wont be happy with the results.

The key to indoor grow is to simulate outdoor conditions as much as possible...without the elements dangerous to plants.

Light is the most important.

Buy some PRO MIX from a nursery. It comes at 6.5 pH and if you water it with pH 6.8 or so water, you'll never have a problem.

It has nutrients in it so all you will need to add is some cat shit or bat shit now and then after 25 days.

I suppose a box over your plant will work...just stick a fan in there to blow the air around. Not IDEAL, but you will still grow some smoke.

You need to be sure you have the environment to do this and the will to see it through.

Think about it. It is a commitment.