Help with rear shocks and adjustment please Options

[Wyvern]

I have these shocks on my 73 1.7
They seem "ok" but just want to understand their adjustment.

From my research they are Koni "Reds"

Question 1 ... My car rides high (I think so)
Measuring the "donuts" as what I understand is the preferred method I am at 6 1/2" on the rear and 5 1/2 at the front.
Am I correct that the clip on the spring perch can be moved down to correct rear ride height ? ... then adjust the front torsion bars (yes ,,, then alignment)
I thought they had 5 grooves. Looks like (I am in 2nd from the top / highest.
What height should I be targeting ?

Question 2 ... I have found 3 different instructions on adjusting the compression / rebound . any help with the correct way and info ?

Thanks

[Wyvern]

^^^ Tnks
Hmmmm . if my goal was front 3/8 lower than the rear - I would need to pick up the front ... and that's not the direction I was looking to go.
I would be thrilled to drop the rear 1 more inch . I could do that buy cutting the springs (even if just for a test) or if I knew the 140s would give me that.

Thanks on the adjustment. I will pick a mid spot and adjust those once springs are set.