I'm planning out a 1970 Challenger build with a 440/512 EFI stroker, and a GV 727 auto. I wanted to know what suspension upgrade system would work best. Whatever system I go with, I know I will be going with a US Car Tool chassis stiffening kit.

This is my current (possible) list of upgrade parts:

Borgeson P/S Conversion Box 1-1/8" Sector Shaft
Firm Feel E-Body 1.18 Dia Torsion Bars w/ dust boots and adjustors
Hotchkis Geometry Corrected Tubular Upper A-arms w/ protective boot kit
Hotchkis Sport Sway Bar set
Hotchkis Geometry Corrected Sport Leaf Springs
Hotchkis Tuned 1.5 Adjustable shocks
Hotchkis Adjustable Steering Rod Kit
Hotchkis Adjustable Strut Rods
Firm Feel Fast Ratio Steering Arms
Hotchkis Pivot Shaft & Bushing Kit
Doctor Diff. Strange S60 Rear End w/ 35 spline axles, TrueTrac Carrier, 3.23 gears, 1350 large aftermarket yoke
Baer Front and Rear Pro + Brake Kit

It's either all this, or an RMS AlterKtion front end and Street Lynx rear. My goal is to make this handle as close to a modern car as possible, like a 2015 Challenger (they recently did many suspension upgrades), so that it can keep up with (or at least come as close as possible to) modern cars on a track or the street. Money isn't my main concern here, I just want to know what system will give me the best performance. What has the best turning radius, the best stability, the least body roll, and which can handle at speed the best.

Also, is there anything here I should add or discard? Anything that might work better?