Dom,
I understand what you are saying and now that I have put the pieces together I understand how they interact. However, getting the proper geometry- especially with my bastardized 8.8 IRS rear end requires a level of understanding and a modeling program that I don't possess.
What I did in my case, was to study the CR drawings, some drawings of the original (or should I say HiTech) suspension pieces, and the way that Factory Five handled the T-bird knuckle connections. Along with input from several people who seem to have some experience in these areas, of course. Once I analyzed how that was accomplished, I tried to combine the best of those systems and tried to maintain the original geometry as closely as I could accomplish.
In addition, at all the attachment points, lower and upper control arms, and the drag links, I used 3/4" Rod ends for adjustability so I can get as much movement as possible for future refinement of the system.
For all I know, once I drive it I will find it doesn't work at all and I may have to scrap the whole thing and start over again, but at least I'm at a point where in my mind this will do what you describe above.
Hopefully, the rest of the build will be much less complicated and stressful as this particular portion has been.
I took a few pictures the other day. If that would be helpful I could post them.
Bob