Which way should I go with pinion angle ??????????????????????

I have to comment on this one. Pinion angle is a relationship between the driveshaft and the rear axle, period. The driveshaft has be in the car to check pinion angle.All these references to the ground are confusing things. You could check pinion angle with the car standing on the back bumper if the suspension was loaded. It doesn't care where the ground is.
You need to load the suspension as the car would be normally used. Check the angle of the driveshaft to the pinion. 2-3 degrees nose down for a street car is fine. I've seen 10 or more on drag cars. The angle from the driveshaft to the transmission ideally is 2-3 down, but in a stock bodied/transtunnel car you can,t move the trans up or down much to adjust this.