Right now, we have 4 day old babies and are trying to figure out fencing. Looking not to break the bank--not sure how bad our predators are here, but I'm bracing or the worst. Upstate, NY installation. Plenty of nice, flat, area to move fence around. How's my chicken math? One section of 164' of poultry fencing could essentially make a "square" with 41' sides, thus giving me 1,681sf of "run"'space. Chickens need at least 10' of run space. Assuming I keep 30 birds, I would "need" 300sf minimum, which one fence would do, correct? Thinking of just buying one 164' length fence to start and see how it goes. What am I missing? Poultry Net, double spike, 164' = $204 Battery Housing= $118 Battery=$60-ish? Charger=$30ish? Door=$53 Extra posts=.$4 each...so $64 What am I missing? Are there any places here I can save $$? I'm guessing our coop is 150' from the nearest electrical outlet in our Morton Building Garage. Would it make more sense to run a long extension cord or do the battery? Don't want to spend a fortune but I'm already up to over $500!!!