ventalation

When is the best time to use inline intake fan and inline extractor fan for ventilation pics of my plants she had no fans on in there just a cfl 300w dual spec

I'm going to start a grow room soon and would like some advice. Is it possible to use the materials below in a typical 8h x 15L x 11w bedroom with 4x4 tent. Bedroom temps are around 70-80 summer and winter. Pics of room are below. I will be exhausting out a 2nd story window, and intake will...