Wow, you certainly have a lot invested. I'd make some calls. There are decent planetaries out there. Just have to track one down.
Will you be dual feeding the directs and using a billet shaft forward drum? Do you have a copy of the atsg manual and the ckperformance book? What core are you starting with? Vb and gov with the right setup go a long way when fooling with the 2004r.
Here is a list of parts so far
Billet Overdrive Carrier $139.99
Upgraded Lockup Solenoid $21.87
#4 Pump Selective Washer $13.00
Rollerize Rear Internal Gear $39.99
10 vane Pump kit $24.99
hardened Sunshell $20.89
Rollerized Center Support $39.99
Transgo Shift Kit $129.95
rollerized L/R Clutch Housing $55.99
Heat treated Stator Support $60.00
Hi Pro 1-2 Band $32.99
Art Carr Supper Rebuild Kit $289.99
Billet Input Drum $299.00
Billet Direct Piston $49.00
Billet pump rotor $139.99
Billet input shaft $249.00
Billet forward Piston $79.00
Monte Carl SS Governor $95.00
Billet Overdrive Ring Gear $119.00
I will most likely not dual feed the 3rd clutch as most of my fun will be the 1-2 shift. The transmission is a 89 core KJF. Here is a picture of my car... I just built a forged everything 350 SBC with about 420 HP. It currently has a Turbo 425 (from a motor home) which can handle anything, but I want 4 gears so I can run a bigger Rear (currently a 9 inch with 3:25)..