Basically, yes....
1. You only need a 3mm spacer to clear the Pescara wheels.
2. With the 8mm spacer you will not experience any tire rub when driving normally.
I had tire rub with ET50 on the Nurburgring!
That's the point. It isn't enough having sufficient clearence at "normal" driving.
It needs to be sufficient in
any driving situation.
Even with 8.0" ET45 + 225 wide tyres + fender screw mod rubbing may occur.
If someone says with ET41 it won't rub he probably drives like a granny. That
doesn't help.
Again, ride height does NOT affect the path the wheel travels. You aren't safe
from rubbing at stock ride height.