Did some more playing around.
New drawing of stock with some actual numbers. Started with 11mm peak lift from the Schricks and worked from there..
New 2.3:1 rocker
Two things - the ratio of the old vs new lift doesn't rise as fast as the change in rocker ratio. For this configuration max lift goes from 11mm to 11.65mm.
The cam timing error of 2deg with the rocker change seems reasonable.
One thing I didn't get right is the dia of the rocker rollers which does influence how much the lifter needs to move when the pivot is moved. Once I find my spare rockers or someone else measures one for me this is about as much as I can do.
Even if I'm off on the low side .65mm extra lift and small cam timing error doesn't sound bad as long as it's not crazy money.