Custom 4 link design

[Steve N 69 69 69]

I'd like to build a custom triangulated 4 link for my daily driven 70 Camaro to work with shockwaves. I've done a lot of searches, and after looking at the aftermarket units, the custom stuff, and measuring my car, I came up with this design.
I plan to use 1.25"x.120" DOM, weld bungs, and 3/4" Teflon lined moly rod ends with high misalignment spacers, on all ends.

To get a longer upper arm I'll add a mount pocket 3" deep toward the back seat, next to the frame.

heres the excel file 4 link.zip
Any advice, improvements, greatly appreciated.
Thanks, Steve