Hey there ATB!
Im living in the suburbs as well and have not had any type of problems growing 12 or 13 plants on my balcony. Neighbors are still very nosey and the police are thick in this neighborhood! Try what I am doing and learn to grow many types of legal plants like small shrubs and things like tomatoes and beans, use the fact that you have many other plants growing to your advantage. Do not try to advertantly hide them, that just makes you much more guilty of doing something wrong and neighbors will get much more nosey and you will get busted!!!
I have planted almost two dosen Indy's and sativas on my balcony but have transplanted 11 or so to a nearby area that is not on my property but have left two on the back patio of my townhome. I have at least 5 garden bean plants, 4 tomatoes, a potted cedar tree and a multitude of herbs like basil and cilantro. Blend all these plants with your babies and learn the techniques of supercropping and bending, do not let your plants get more than 3 feet in height! Also, if you have fragrant flowers and herbs don't worry about smell of budding plants, it will all combine and smell like a sweet greenhouse.
I also have a closet space where I have a 100 W CFL and a fan when the weather outside is undesirable so that my ladies can use the time effeciently and not wasted on a cloudy day.
One thing you have to worry about is the heat from direct sunlight on patios or balconies, on a sunny day about 80 degrees, a flat surface can reach temps of over 100 degrees!!! if you have decided to plant on the patio instead of your backyeard, make sure you get big pots and a lot of soil. I have grown several plants on my balcony over many summers and autumns with no problems but realize that you are new to this, there will be issues. If you stress about neighbors, you are either paranoid or you actually have a reason to be worried, you decide what is the truth and if neighbors are that bad where you live, don't risk it and grow in a place nearby that you can tend to without detection.
Be safe and use your instincts, nobody wants another inthusiast in jail or prison over bothersome neighbors!!!
Good luck