Not sure about overkill, Minecraft sounds great on a pair of DSP5ks. I swear you can hear the creepers.
I presume given your price that you're in the UK. You might like to adjust your profile so people have a better idea where in the UK you are.
Good luck with the sale.
Old Sooloos, new Sooloos, 500 series, G series, HD621, AC200, Prime PS, DSPs