FFS. THE ABS IS ALL OR NOTHING, YOU CANNOT JUST HAVE IT ON THE FRONT
And for good reason, ABS only working on the front wheels would be extremely dangerous to say the least.
You will also find that any decent garage will also refuse to MOT a car with a disabled ABS system.
Plus, brake shoes need changing about once in every five years. And once you've had those springs apart two or three times you can get it down to about fifteen minutes either side, including jacking the car and resetting the handbrake once you've finished.
Also, considering that you're talking about removing the hub nuts on your rear wheels, I hope for your own sake as well as anyone driving anywhere near you that you've bought yourself a torque wrench so you can make sure you're bolting your back wheels back on well enough. I don't really want to know what happens when a wheel makes a break for freedom...