Thanks to everyone for the feedback and the recommendations so far!
I have done some research on the subject myself in the meantime, and it would appear that, in line with the feedback provided by @agrippa, @pintree, @hdm & @rauliruegas, the stock headshell weight is in the sweetspot for a 6.9g cartridge with & 17cu @ 10Hz compliance, at least according to the calculator provided by @ericsh, and as long as my assumption is correct that the stock arm and headshell have a combined effective mass of around 12g.
If this is all correct, I will stick with the stock Technics headshell for now, and assess the sound to give me a baseline for any future upgrades.
I have done some research on the subject myself in the meantime, and it would appear that, in line with the feedback provided by @agrippa, @pintree, @hdm & @rauliruegas, the stock headshell weight is in the sweetspot for a 6.9g cartridge with & 17cu @ 10Hz compliance, at least according to the calculator provided by @ericsh, and as long as my assumption is correct that the stock arm and headshell have a combined effective mass of around 12g.
If this is all correct, I will stick with the stock Technics headshell for now, and assess the sound to give me a baseline for any future upgrades.