As a rule of thumb, measure the distance from the ground to the top of the wheel wells, both front and rear. If you have your WD bars set right, the front should not come up (distance increases). The rear can squat 1-2 inches (distance decrease). If your front is coming up, then you should try to increase the tension on the WD bars until you fall within these parameters.
I have the Equal-i-zer WD hitch, and my front axle is at the same height hooked up and the rear squats about 1-1/2 inches. And the trailer rides just about 1 inch tongue low.
Every trailer and TV combination is different, so the number of links will be different too.
2015 Jay Flight 32RLDS Elite
2012 Chevy 2500HD Crew Cab LTZ (6.6L Duramax/Allison)
Equalizer Hitch (1200# bars)