My frustration has been with all the books and some of the chat groups. You'll run into some issues just having 6 hens that are very different issues than people with larger flocks, say 15-20 and those with a rooster will run into.
Roosters are GREAT peace keepers. But us city dwellers can't have them. So the hens can peck at each other and fight. And there's no one to put them in their place. If you get a bully, you really will have no choice but to get rid of it. This took me a year to accept. It's SOOOOO tough when you are a softy like me and become really attached to your hens, think of them as pets and know them all by their special names you've selected.
I turned out to be a total softy and take my hens to the vet when they seem off. That's kind of pricy and hadn't planed on that expense. But I just don't have the heart to let nature take its course.
So when I was down to the two hens, I bought more chick and raised them in the garage. Integration has taken me THREE long, very painful months that ultimately forced me to buy a second chicken coop. I wouldn't have this if I had a rooster. The books tell you to tuck new hens into the hen house after dark and the older hens will just wake up and say, hmmm, I don't remember you. Well, my two adults when ballistic and attacked the babies immediately and then turned on me. I got really beat up that night.
And while I think people on these groups mean really well, I frequently got advice that didn't help with my current situation. People would say things like "send the hen to freezer camp" or "I wouldn't have bought that variety of hen", which while IS good advice, is not helpful when you are IN a situation looking for a solution. Especially, after you've worked a long day at work and come home to a situation.
And since you'll probably have one coop and a relatively small run, you likely won't have space to quarantine or set up a second space to remove a sick hen or bully.
I wish there was a better book out there for the city dweller who has 2-6 hens. It's been loads of fun for me and I'm glad I did it. I did have some very low points over the last 1.5 year. You are smart to ask the questions and seek out advice before you jump in.