I have had a Silvia v1 together with a Rocky grinder for many many years. I love it. You have stated that you have the Rocky grinder, which is perfect. Once you get the grind sorted out, you are home free.
My only addition was a PID. I believe that it adds a lot., but for the first 5...
I have had a Rancilio Rocky for a whole lot of years. It is pretty bulletproof. It should last many lifetimes as it is overbuilt. Biggest danger is it’s weight. if you drop it on a toe, you will be limping for a long time.