Many thanks for your thoughts!
The question is, what additional load would the coilovers cause? It should be just the compensation of the "sagged-leafs-loss", which would be certainly much lower compared to the "only-coilovers" (like the SSL rear suspension). Moreover, if I understand it correct, the SSL rear suspension uses the original shock mounts without any modifications? In combination with Rog's bumpstops, to avoid the extreme load peaks of the shock mounts (which are, I guess, designed with some reserve?), it might work without any mount modification and risk of damage?
Just thoughts...
Peter