Damper/shock absorber forces

[Ozone]

I work for large Japanese car manufacturer.
I bought my S15 with standard suspension and fitted NISMO springs and dampers. When I returned to the UK the NISMO stuff was far too stiff. I ended up with Standard dampers and custom springs - 26N/mm front springs, 28N/mm rears. Faulker who made them actual made the fronts at 28N/mm which made it understeer but I fitted some PU ARB links which got the balance neutral again. If it wasn't I had a S14 ARB for the front which is slightly smaller.
S15 standard dampers have quite high forces for a standard damper (compared with S14) so can take stiffer springs while still feeling composed and well damped.
I'm not into mega stiff suspension so I'm sure some people would disagree with the above but I think comfort and grip are as important as handling.

Back to AE86!
I'm using a guestimate of 500mm for CoG but haven't done any research as to how accurate it is. As I'm only using for making comparisons, not outright results so it doesn't make a big difference.
I'm only using static Roll Centre. I measured my car up (although quite inaccuratly, I need to remeasure now I have a flat garage floor) and calculated them at 90mm front and 265mm rear.
I bought Greddy Type-S when living in Japan as I got a big discount. With 8kg/mm/6kg/mm springs I've calculated bounce frequency of 2.49hz front and 2.56hz rear. I want to run softer springs but I'm worried my 86 would then be over damped even with the dampers set to minimum - that is why I'm trying to get damper info. Even then I think the Greddys might bottom/top out as the stroke is so short. Anyway I think less than 2Hz would be a good start - 5kg/mm/3.5kg/mm.
When I share any spreadsheets I want to double check I haven't any errors first! I hope in the future to have one big spreadsheet that does everything, at the moment I have a number of smaller spreadsheets. Below is a screen shot of my front suspension geometry calc sheet: