600 Watts of cfls is cooler. You could not put 600 Watt hid in a 3x3 space. I have been know to grow the smallest plants in my town LOL. When they are at fith node I top then top again again. My last plant was 1 foot and had 18 tops and I got 3/4 of a oz. I wish I could post pictures but phone...
Like said I would just wait or mow some lawns get paper route or some odd jobs. I have been surprised at the money I have spent. Iam on first grow and using cfls but still money money money. But good luck.
I like to start them in clear solo cups with hole in bottom. Then put that inside red solo cup. That way I can lift the clear cup and see how roots are doing. Then I know when to transplant.
I hate to say this bro but stay in school get good job then grow. You just don't have the money to do right now. Also you need more light so if you can't add more due to electric bill then your done you need alot of light. Not trying to bum you out but it takes money to get good grow going.