Take a look at the color chart for Rembrandt. FWIW, they use PR264 in quite a few of the mixed colors. I don’t see PR176 used for anything but Carmine. Studying that chart may give you some ideas for how to use the PR264.

I have used Perm Madder Deep for years. It is my go-to red on my portrait palette. I wouldn’t call it a complaint, but it took awhile for me to get used to how potent it is. A little goes a long way. Of course, I’m talking flesh tones here.

I also use a very simple, limited flesh palette: Cremnitz white, yellow ocher, perm. madder deep, Williamsburg burnt umber, and black. I used to use ivory black, but switch a couple of years ago to Williamsburg Italian black roman earth, which come very close to making a neutral gray when mixed with white.

Of course, when needed I add and/or use other colors in my flesh palette.