Retro fit ISObus RDS Artemis to a Df1

As the title states, I'm looking to convert my df1 front hopper to do variable seed rates.

I've looked at the Artemis system and like the features but was wondering if the ISObus system will retro fit to run on my jd4600 screen rather than having another screen in the cab.

Has anyone fitted the ISO system?

Is the a big price difference between the standalone Artemis and the ISO system?

I'm still waiting for rds to come back to me with details. So any advice welcome.
Thank Phil P