Wondered how the OP was coming along with this? I recently converted from 143mm Romin to SMP Dynamic with very positive results. For me seat angle is more important on the SMP vs other seats I've tried, big differences in feel for small changes. I ended up at -4 deg of tilt down (vs -1.5 deg on the Romin). Interesting that the level of the front part of the seat tilts up about the same as the Romin (+ 1.5 ).

Seat height is still a little in flux, so far -4mm with the SMP. Setback for me ended up the same measuring from the tip of the seat.

Took me a good 4 rides to get it sorted.