Do some thinking about your coop construction. The common thought is to build it from scrap because ... it is just a coop, right? A slapdash coop gets to be a pain to maintain, unless you are out in the county and a stinky coop is a non-issue. I built my first coop from scrap, recycled building materials and such. It was on wheels and the run was PVC and chicken wire so we could roll it around the yard. That proved to be a huge pain as if left in one spot for more than a day, the chickens would strip the grass to the nubs and once the house was moved all the chicken crap had to be cleaned up or the dogs would chow down on it. Needless to say, it got parked in the corner of the yard and stayed there. Daily maintenance beyond collecting eggs proved to be cumbersome. I installed a water system with a 5 gallon bucket which will last about a week with 5 chickens and a big enough food system to last a week also. I then added a heater on a thermostat for winter and a timer with coop/run lights to extend the day and keep them laying. I use one of the weather station type thermometer with the remote, put the remote in the chicken coop and during winter you can keep tabs on the inside temp. I target about 50 deg, but really you only need it above freezing. 50 deg seems to keep the coop drier, keeps the condensation down.

Bottom line.... the coop was pretty clever in design but by the time I kept tacking on more things to make my life easier and solve problems, the coop ended up being difficult and had several features that really aggravated me. Scrapped the whole thing and started over. Building the new coop as a permanent structure with a roofed over run. Fully arranged HVAC system with heat, exhaust fan, separate timers on run lights and coop lights, automatic coop door, control panel box and more. I learned a lot from the first coop and when beginning design for the next one, started with a list of what most annoyed me from the first one, added what is critical, then added would be nice features, and went from there.

If you are expecting to just keep a busy lifestyle with job/kids/etc. and that adding chickens are no big deal, plan to invest a bit in the coop to make your life easier.