Is there a specific reason for using a 4 link system, other than the brag factor of having one onboard? Major modifications of steering and/or suspension systems can have unintended (sometimes deadly) consequences in the event that an unexpected sharp turn, or maybe an S-curve is encountered at highway speed. Do plenty of homework and mock up your suspension system on a level shop floor with the frame tied down firmly at the desired ride height. That's how we built race car frames, and building a vehicle for use on public roads is far more safety-critical than offroad stuff. "Measure twice- - - -cut once!"
Jerry

"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!