I mostly set the amp for the venue. But, I think that there are so many variables, i.e., bass choice, cabinet configuration, venues, variances from amp to amp, music genre, and the biggie;
personal taste, that it would be difficult for
anyone to give you advice about tone settings.
You just need to play around until you find what sounds good to
your ears.
I've used Rotosound RS66LD on
most of my basses for almost 4 decades, the only exceptions are a P and a fretless G&L SB1 that I keep strung with LaBella 760FM and D'Addario's on my 12 string. I've tried most every fad new "best ever" strings that have come along; coated
this, cryogenic
that, but none have that killer zing of a fresh set of stainless Rotosounds IMO. The Rotos don't last as long as some, and they are a little pricey, but the best sounding.
All of which is
my opinion, of course; see the paragraph above...