Hi and welcome to BYC; glad you joined! Sounds like you already have good knowledge as far as basic chicken needs. I think that when you make the decision to go ahead and get yourself some pullets, you will be very glad you did. Their fresh eggs are great, and they are so fun and entertaining. Since you have nearby neighbors, a topic that might interest you is that some chicken breeds tend to be quieter than others. (No guarrantees and there are always exceptions.) You can also make your own thread in the "Chicken Behaviors and Egg Laying" forum, and should get lots of replies.
I agree with you that it seems odd that your city says you "should notify your neighbors that you have chickens, but it's not necessary to ask them for permission." Unless that is specifically in your city's written rules, I would get my 5 hens and not be concerned about notifying neighbors. Are your neighbors supposed to notify you if they get a dog? Sounds like your subdivision residents tend to keep to themselves and like it that way. Athough, when you get chickens, you will find that chickens are a great conversation-starter, and you may convert your neighbors to get chickens of their own. But if that doesn't happen, you will find endless fun and interesting chicken talk on BYC, and you can tell your own chicken stories too.