Do i need to make it big enough so it fits all my plants and it can fit me inside there as well?

That's a personal decision bro, your plants will still grow without you in there. Keep in mind that your mature plants will double the size after the light schedule change from 18/6 to 12/12. Make sure you have enough room for the plants for sure.

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I can't help but think that that Chia Obama shit is just a joke. Cha Cha Cha Chia

If you make enough room to sleep in there, your plants could absorb all the CO2 you exhale throughout the night

I just made mine big enough for the number of plants I wanted to grow.

what about when you open it up and have to work on the plant? doesn't the smell leak out? what about when drying it? do you have a separate tent for that too?

When I have my Can Fan & Can Carbon Filter running, I don't smell a thing in my grow room; therefore it's possible to still contain the smell in a sealed walk-in grow room, or a small closet with a door. As long as you have a carbon filter & fan. I have an 8" Can fan with a 8" 150 Carbon filter, and I don't think I smell a thing when i'm in the grow room unless it's turned off. I will be drying my buds in the same room that they were flowered in b/c it already has my carbon fan & filter for the curing process odor. Just make sure that your buds are in a dark dry place for 4 days, then move them to glass mason jars for the remainder of the 10 days. This is by no means a curing guide, and i've never cured any bud, and make sure you do a little reasearch on how to before you take my word on it. If you're a closet grower, you can still contain smell. If you're concerned about stealthiness, I would go soil because my hydroponic sump is loud as hell. Also, decide on your lighting; you could do CFL, or HID, or LED. Have you decided?

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I can't help but think that that Chia Obama shit is just a joke. Cha Cha Cha Chia

^^ What he said about the smell.

I've thought about needing to work inside, but that's as easy as moving plants around and I think I'm going to lollipop my plants. I plan on drying in a large cardboard box I have left over from the wife buying a new steam cleaner, with an air intake and very small computer fan for exhaust. I've been doing a small amount of research into drying and curing. Ideally drying should take 5-15 days and curing up to two more weeks. I'm a little loaded so I don't remember the temp and humidity, but both are lower than the ideal flowering requirements. You want the buds to dry slowly and evenly so they transform all of their energy into thc. Quickly dried buds taste green and don't reach their potency potential. Example, a friend dried a purple variety in two days and it was harsh, crackled when burned, tasted green, and left you with a headache about an hour later, even after curing for three weeks.