So looking to build a 48RE to handle 450 to 600hp. nothing crazy.

Looking at:
-Billet Flex Plate
-Torque Converter
-Shift Kit
-Servo Kit
-Master rebuild kit with· Gasket &Seal Overhaul Kit Complete Friction/Clutch & Plate Modules
· High-quality transmission Internal Oil Filter
· Heavy Duty RearBand
· High Energy BorgWarner or Raybestos Front Kickdown Band
· Complete Bushing& Thrust Washer Kits

Is there anything I am missing?