Short answer, no you don't want your RRC as high as you can get it. Actually, a common practice now days in road racing is to set it as low as possible, as in mounting the Watts under the diff. You have to consider many variables when deciding on a RRC height. CG height, FRC height, roll steer %, rear roll axis, vehicle roll axis, anti-squat %, just to name a few. Some of these variables get used to determine where you want the RRC height, others are determined by the RRC height.
May I suggest Herb Adams book Chassis Engineering. It's a great read, very easy to understand. Good place to start. And then every other book you can get your hands on.
What kind of 4-link are you thinking about?
Kevin
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