Cheap Vent and Lights Questions

I have just started growing and i currently have two fluorescent lights with a reflector over each. A ocl fan and a heater because my room is colder than the rest of the house. its 6 1/2 x 4 1/2 x 6 1/2 foot room that i have built myself with a 99% reflective maternal around the room. i don't have a lot of money and need a cheap but effective fan set up to move the hot air out of my room and outside with out having the smell tell everyone that im growing. i don't want to order anything online so i need ideas on what to buy from my local hardware store to make a fan and filter that will take the air out along with move fresh air in. i also need a new lighting system looking at 2 600 watt sodium lights with the cooling tubes but the ballasts are $300 each. any ideas on how to do this by not spending $2000 or making it look like i just found everything in a dumpster lol thank you very much for any info
 
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