@cdlord To answer your question(s) (as best I can) I'm trying to visualize the height and build characteristics of the coop you intend. Here are a few things to keep in mind/take into account in the planning stages BEFORE you build... You're getting pullets/hens for egg laying, so they will need some sort of nest box in which to place those delectable butt nuggets of pure joy. They tend to like to lay where others have, so for 4-8 birds, 2 nest boxes will be more than adequate. You'll no doubt find that they pick one as their favorite and most eggs will be found there. Also, I would NOT make these available to them until they reach POL (Point Of Lay - just before they start laying) or they will sleep in them at night and fill them with poop. NOT something you want them to learn to do.
If you place said nest boxes inside the coop, there are a few things to remember; they are going to eat up valuable and scarce floor space (ideally you want 4 square feet per bird inside the coop) unless you raise them up in height (figure at least 12", 18" is better) so the birds can walk beneath them, thereby NOT using up floor space. If they are inside the coop, this means you will need to open and access the inside of the coop daily (or multiple times a day) to gather said eggs. Not a major issue if you'll be using sand as you'll be in there cleaning/scooping multiple times a day anyway. If you enclose the nest boxes (put walls & a roof on them - some birds like privacy when laying), the roof should be sloped to prevent the birds roosting on top of the nest boxes and pooping all over the roof or down into the nest boxes. Many cut a hole in one wall and build exterior nest boxes for these reasons; easier to access, don't have to go in the coop, no poop on top of them, don't use up floor space.
The next issue is roosting. The birds have a natural proclivity to try and roost at the highest place they can reach, think above the reach of potential predators. Therefore, you need your roost pole/beam/log/2x4/etc. to be at that highest place. If you don't do this, again, you'll have birds sleeping in/on top of the nest boxes and filling them up with nightly poop. What most folks do is mount a small perch/step in front of the (elevated) nest boxes for the birds to use in transition from coop floor to entering the nest boxes, then place the roost on the opposite side of the coop at a height equal to or higher than the top of the nest boxes so the birds will go there at night. Many will build a removable poop tray/board under the roost as most of the coop poop will occur at night while they are roosting. This makes daily cleanup somewhat less tedious (but IMHO any required cleaning is STILL tedious). The poop board should be the same 12-18" above floor height, or more, to not use up floor space. The roost should be a minimum of 12" from the wall so the birds have room to turn around, and help keep them from pooping down the wall. If you'll be doing multiple roosts, they should all be at the same height or the birds will be fighting to determine who gets to roost on the higher one, and should be at least 12-18" apart so they don't peck at each other or poop on each other. If you intend to free range your birds or give them a large run, they'll spend most of their time out of the coop, so most of their poop will be from overnight deposits (on the poop board) under the roosts.
One other thing to consider is food & water (as well as grit & oyster shell). There WILL be days in the winter (high winds, blowing snow, etc) when the birds will not want to leave the coop. So will you be feeding and watering them inside the coop? Again, this will eat up floor space and additionally add to the potential cleaning issues inside the coop. If you plan to feed and water in the run, then you'll want/need a fairly protected space to block prevailing weather so the birds can come out and get to it when the bad weather happens. Some folks wrap the upwind side of the run with plastic or tarps in the winter, or block the up wind side with hay/straw bales... There are lots of ways to deal with it, you just need to be aware and take it into consideration. The primary weather patterns should also be taken into account before you build, as to how your coop is oriented! This will help not only with weather but with ventilation and shade.
If you are making a raised (above ground) coop, you've built in a nice shady area for hot summer days, but remember that some of your birds might prefer to build a sand nest under the coop to lay eggs, so make sure you have a way to reach under there to retrieve them. If one of the birds decides to go broody on you, she might also decide to do that under the coop. If the coop is raised only a bit to get it off the ground, but not enough for the birds to routinely get under it, be advised, ONE of them WILL get under there and you'll need the ability to get her out. That also promotes a nesting area for vermin - rats and mice, which will draw in snakes to eat the vermin, and it can just create all sorts of issues.
Anyway... as I said, you might want to spend some time over on the coop build pages, you'll get all kinds of great advice and shared experiences along with pictures (worth a thousand words!) that can help guide you.
Edit to add: read your intro and being in Aurora, you're out east of me (Brighton area). You get cold, and wind and snow and hail... weather. You don't need to insulate the coop, you don't need to heat the coop, they may want AC, but you don't even need to provide them that. But you will need a way to keep water from freezing in the winter (lots of ideas on here and plenty of time to research out what will work best for you), and your birds will have little to no problems with summer heat either, as long as they have some shade. You (& they) will do just fine!
