Q about 2004r full manual valve body

[Firehawkslp]

I've got a project RX-7 Turbo II chassis 3000 to 3300lbs, 4-wh discs, full independent suspension, 8" ring gear, in the diff. The only gear set available is what's in it (4.10). Power from a 383 SBC should make 430 to 450 horse and 460 to 475 torque.
The 200r4 has a better gear splits than a 700r4 (w/4.10s don't need or want 3.06 1st gr of the 700) and fits the trans tunnel w/o any mods.
How practical is it to run a full manual valve body on the Street, Auto-x and Trackday events; also recommendations on stall for the convertor? I'm going to keep the lockup feature of the convertor.

Thanks