Dear all thank you for your interest, I just started to think this thread isn't very interesting for you because of the little response.
I will try a 1" block and remove the lowest leaf. BTW I already have a 5" flip kit and 2" shackles.
BTW has anybody pics of a bagged rear (over leafs) with an western notch.
Attached you'll find some videos of the first tries.
http://www.youtube.com/watch?v=ir4pDoBCn00
http://www.youtube.com/watch?v=Onpu-PpNHaM
http://www.youtube.com/watch?v=myiTE4aCipg
At the moment it isn't really lower than before but I can cut the cups 1" more. With the speed I am quit confident because I use the air lift block with small valves!