Couple questions

I have all brand new bushings, but might see if Pettybludart still has 'em

On the other hand, was wondering what advantages the "Dynamic" strut rods have. Seems like everybodies selling them, but don't see how they can be adjusted without side loading the lower control arm bushing.

Don't seem feasable. (can't believe I said feasable)

I agree. This might start an argument with those who have purchased adjustable strut rods...
The strut rod serves as a tether to prevent lateral movement of the lower arm. Because it it also configured like the tangent of a triangle the distance changes with up/down movement of the lower arm. Massive rubber bushings at its forward end are used to absort most of the change. Changing the length of the tangent doesn't change a thing until all of the movement in those forward bushings is consumed. Then the lateral pressure on the lower arm bushing results from up/down movement.
A super hard polyurethane lower arm bushing will transfer the stress to the pin and the K frame. They will likely squeak too.