Welcome to the forum. You have found friends who share your enthusiasm. That said good friends can be blunt sometimes.
I assume you have purchased this coop:
If so, one should probably stop short of suggesting you have been had.........but don't feel bad. You are not the first one to have been mislead.
In short, this coop should be very similar a lot of these type coops.......basically it was likely designed by someone with good design skills to look cute and to enable the buyer to assemble a pre-fab kit, but also a designer with no working knowledge of poultry husbandry. It has all the right features (roof, walls, floor, nest boxes, roost bars, droppings board, pop door, etc), but nowhere near right in proportion. Also, what is sorely missing is open ventilation. Depending on your climate, this could be a serious problem for any bird placed in it.
As near as I can tell, the coop part will be around 40 in x 40 in, which by most standards would house no more than 3 birds. Where did they get to even 4, let alone the 6 to 9? I also read the reviews and most had been written pretty soon after assembly. Not many had lived with it for more than a few weeks or so. Give them another 6 months and the story may change.
If you are committed to this, and want to give it a try, and don't mind blowing the original investment until you get a chance to see it in action (and time to do better next time), this won't be the end of the world for you or the birds. Well, maybe the birds. Given a choice, they would probably roost in the trees instead. My daughter put 4 birds in a coop a bit larger than this and given a chance, hers took up residence in a fort atop her son's playground set. They wanted no part of the coop and only used it when actually confined to it.
But to sum things up, expect it to be way too small for the amount of birds you plan to keep. The interior and run will quickly become a smelly mess. My first suggestion would be to purchase and install 2 x 6 lumber (on edge) around the perimeter of the run and plan to fill it with deep litter. This will cut down on the smell, the flies, and give them a place for their water and feed. You might try hang those beneath the coop in the run or maybe put them up on blocks to get the feed and water up off the wet, messy floor.
So figure you have about 6 months to do better. Time with the birds and time with this coop will give you a better feel for what you want long term. I'd suggest a coop no less than 6' x 6' plus an enclosed and covered run of the same size (so overall about 6 ' x 12').
For reference, the coop I'm building is 8' x 12' and I don't expect to keep more than 8 birds or so in it, plus allowing them free run of a garden area. That is larger than standards suggest for the number of birds I plan to house (at least 2X), but that's OK. I'll have room to expand if I want to.