Hi i was planning on building a grow room that was 4x3x5 but now after measuring the closet its going in i only have about 42"x45"x5'.I am planning on having 2 chambers in the box. One for vegging and one for flowering.Im not sure what size light i should use i was looking at the 400w hps and mh but they seem alittle overkill for that area ..what do you think? (im getting an mh and hps). For ventilation im getting a dayton blower either 140cfm or 265cfm. With a passive intake.Heres what i need to know. 1-how many plants will i be able to fit in a 42inchx45inchx5foot area? 2-how big should i make the veg chamber and how big should i make the flowering chamber? 3-is 400 watt hps for the flowering and 400watt mh for vegging overkill? if so what wattage should i use? 4-Should i use the dayton 140cfm or 265 cfm or should i use something diffrent? also im making a carbon filter so i cant ise pc fans.