That does look like a more capable machine. I don't think you should worry too much about spindle speed - my little Novamill runs at 5000rpm max and I have engraved brass with a 1mm end mill and PCB using TCT engraving bits quite happily - you just have to run slower. Of course you also need some form of CAD/CAM to generate gcode, I variously use FENGRAVE (which is free and very good for engraving, outputs usable gcode directly) or more generally CAMBAM which is more a CAM program though it also gives basic CAD, it can generate engraving code too. Very reasonable cost. If you go ahead might I commission a dial from you?