Rather expensive way and complicated too.
Buy a sangean ats909 or lowe hf150 ssb reciever for around 150 squids.. get a copy of mscan meteo and download free synoptic charts.. grib are only synoptics with a few added wind lines that a three year old Siamese acrobat could visual themselves

..

incorporating everything onto a pc is usually a recipe for failure at some point. same as having everything hooked up to a chart plotter inc radar.
I have the raymarine E120 display, but wouldnt dream of adding a rm radar dome to it due to the single point failure - will still use my perfectly acceptable JRC 1000 radar on its own.