hopefully someone can help me. I think I did the math right but want to be sure I buy enough. We are going to be building our coop and run soon. We will have a section of run attached to the coop (coop will be 8x8) that will have a covered roof. That will be 8'x10' then attached to that will be an uncovered section that I think will be 8'x8' (it will be covered with hardware cloth). I figure the run will be about 6' high (maybe a bit more since my husband is 6'2). I estimated that 150' will cover it with a bit left over for ventilation in the coop. I will also have some from the brooder that I can reuse for ventilation. Did I figure out the correct amt?