I have never heard the Silverline's, but have had many SF models and I have listened integrated amp that you have.
In fact, I even had the Pathos amp as well, but it was Inpol 2 model.
If your space and budget allows you, my advice would be to look for 'better' speakers (still SF, of course) as your amp is capable for it.
Perhaps SF Cremona Auditor M, if you dont mind buying used ones.
I have listened (had those speakers as well) that combination and its something that could keep you satisfied for a long time.
As for second question, generally speaking, its better that speakers have higher impedance as they present easier load for the amp.
But, with your amp and almost all SF monitors in a room that is not too big you should be fine
In fact, I even had the Pathos amp as well, but it was Inpol 2 model.
If your space and budget allows you, my advice would be to look for 'better' speakers (still SF, of course) as your amp is capable for it.
Perhaps SF Cremona Auditor M, if you dont mind buying used ones.
I have listened (had those speakers as well) that combination and its something that could keep you satisfied for a long time.
As for second question, generally speaking, its better that speakers have higher impedance as they present easier load for the amp.
But, with your amp and almost all SF monitors in a room that is not too big you should be fine