Ideal Shift points for 904

yes.

But as you can imagine, the KD mechanism, only delays the upshifts when it is actively adjusting the pressure inside the trans.
To see what I mean; flip the green return spring off the KD link, then gently push the rod to the back until you feel resistance, then hold it there. Next open the throttle until it stops at the back of the slot. When it does, this is now at the throttle opening required for the KD link to begin doing something .
Obviously, at lesser throttle openings the KD mech is NOT DOING ANYTHING at all.
So , in this dead-zone, is where the governor is commanding the shifts. If you want the trans to behave differently in that zone, then you will have to make changes to it; as detailed in my earlier post.

From what I can tell based on what you said, is with the spring off and holding it at the first sign of resistance my throttle plates are about half way open.

From time to time when I WOT the car hit will have delayed shifts which feels about right, but obviously we don't always WOT green lights (unless you want a ticket)
So this is where (grandpa driving comes in) Just wanted to make sure the transmission is operating correctly. I don't want to run the risk of smoking the transmission I just rebuilt.