I'm planning on upgrading my Prusa MK3 to a Volcano hot end. The Starter kit/Eruption Pack comes with a Thermistor and Heater Cartridge, are these better than the ones that come with my prusa? or can i just use the ones from my prusa with the volcano upgrade? perhaps I should just buy the Aluminium block, and nozzles separately? plus anything else that might be needed?