700R4 First Drive and Fill Advice Needed

[KyleSeal]

I am at the point of needing to fill and (I suppose) break in my 700R4. It is a newly rebuilt unit by Jasper, zero miles currently and it is empty of fluid. Being this is a non-stock to this truck option;
A. how much fluid does this trans ideally take?
B. how should I go about adding fluid? Obviously through the dipstick, but do I add X amount of quarts, run it, then add more?

Keeping in mind the engine is broken in, but I have not run it yet with the Holley Sniper & Dual Sync.

Whats yalls experience and or insight?