Thanks for the explanation. When I say softer springs I do mean having the proper wheel rate before all else, just not too crazy with it (a lot of locals here go by "it feels stiff" = "it handles" and go way too crazy with their spring rates). But having the roll bar (adjustable one at that) to tune the characteristic of the vehicle is quite major to me rather than view it as a band aid.
Anyways, back to the topic of building a model
I just realize you said the dimensions you posted are estimates from pictures? maybe I should find another time to try and use pumb bobs to measure the pick up points to compare the result with yours