My car is setup almost exactly like yours in the suspension area and it runs about the same times. I have an R1 block with W2 heads so the nose weight is likely heavier than yours. I recently went from old lakewood 90/10 shocks in the front to Viking DA shocks. With the old setup you could see it unload the rear tire right when the front topped out which was very quickly. Moving to the DA shocks fixed it and my first 3 passes ad the same 60ft of 1.4500(EXACTLY the same 60). I started with them set at 4 on the rebound and 12 on compression and I currently have them set at 5 and I have not tried anything more stiff yet but I plan to.
I don't know about going full stiff but you might try 4-6 and go from there. If someone can get on the starting line and do a slow motion video with an Iphone you can see soooo much more of what the car is doing.
This video was before the shocks
https://youtu.be/RUBhPsx8ZFgThe slow motion on this video starts a little late but the only change was the front shocks. I had the compression to loose on this pass and it really crashed the front down, I moved it up to 12 and it is way better.
https://youtu.be/1YJX0QfQKWE
