I used to have two full sized racks in my basement. I had smoked glass doors on the front side into my home office, and a storage room behind them so that I could get to the backs of them.
I also built a small data-centre with 12 full sized racks, and for it I had a 12RU box wall mounted in addition to the floor models which I used for the main routers and telephony. It was on hinges and swung away from the wall so that I could get at the back. I don't recall the price, but I know it wasn't cheap. Also I had trouble with the cable management between the equipment mounted in it, and the fibre and other feeds coming into it.
Either way I think you're correct that having access to the back is pretty much a requirement for it to be very usable.
BTW, I got rid of all my racks in the end. I gave away my hosting business and consolidated my home stuff into a couple of towers that sit on a desk. I now have a nice wood lathe where the old racks used to sit. I mounted my home routers and switches into the joists with wood screws. Maybe you don't need a rack at all?