First off, I'm gonna say wow ya over doing things. No judgement tho.
As an electrician and tech idiot/geek, have you looked at focused antennas for your router or even upgrading it? My shop is 100 feet from my house and I simply put a focused antenna on my router and changed my wifi from 0 to 45%. You cheap like me you can build one for next to nothing with plans from the net.
I get off my lazy butt and dig a trench I can run cat5 (which I have 1000 foot roll) and wire my shop to the router. Might be something else to think about, have a hardwired ethernet port in the coop. LMAO, but again not judging, but it might be cheaper and more reliable than spending on more wireless stuff.