Sound About Right?

[crabbyback]

So I plan on using a 600w setup, making a 4.5x4.5 grow box with mylar on the walls, one fan blowing on the plants, one squirel fan at the bottom of my box to bring in air from the room, another squirel fan at the top of the box to filter the air out of the box. I will probably have that one attached to some kind of tubing to vent it outside. I also plan on using a carbon Filter Scrubber. My question is 1. Will the smell be that strong if i just filter the air outside or should i get the carbon filter scrubber to take some odor out first? (I live in an apartment with other tenants, i don't want people to know my business) 2. Also if I'm just going to use cheap wood to make my box with, would you paint it white or use mylar? 3.Does this sound about right to have a successful grow? 4. Can I get enough C02 to my plants by taking the air from the room or will i need a C02 system?5. Any suggestions?

Thanks for providing some background. I'll be glad to give you some suggestions. All from my own trial and error.