Just checked your public profile. You don't have a RIP posted. So, here's how I approach this and I hope it's helpful to you. I employ Onyx 732. I make custom profiles for each media. When I work in CMYK, I RIP to that internal ICC profile with Relative Colormetric intent. I also enable the internal Pantone matching system. I hit about 75% of the PMS colors my clients give me. I track my spot colors in an Excel file cross-referencing the spot color and media.