4L80E with loose converter. Can you have the converter lock at the same MPH or 1 MPH above the shift points?

Example, the 2-3 shift at light throttle is 20MPH so can I have the converter lock at 20MPH too? Or 1 MPH higher?

Right now there is no RPM drop between any shift, it stays around 2500 RPM unless the converter is locked. Once locked it drops 800RPM and I can cut the throttle in half which drops the RPM's even lower.

What I'm thinking of doing is have it lock in 3rd right at the shift which should feel like a shift since the real shift cannot be felt and the same going into 4th.

Then I would have it unlock at the same speed or 1 MPH higher then the downshift MPH.

Does any of this make sense?

Lee