Moulding and Casting
Nice design! You can do the milling remotely with SRM-20 and you can create the milling files with Modela Player 4. It would be interesting to test your milling paths with SRM-20, but the safe bet is to go with Modela Player 4. It takes some path defining with Modela Player, because you have the small letters on the top, but it can be done with multiple finishing paths on top of the hearts. All of those have to be defined individually, but can be run in at the same time.