I’d love to use something like this designfutures.club is available for purchase - Sedo.com for finding the best temperature for different filaments. However, uses Cubicon uses .HVS files instead of G code files. Any idea how I can get this to work?

Have you edited gcode before? What you are talking about is pretty simple. “M140 Sx” is the code for temperature change(replace “x” with the desired temp). You can just throw those into the code at whatever interval of layers you want and save. Repetier has a built in gcode editor.
-Jesse

Never edited gcode in my life. Doesn’t mean I’m not willing to learn. Are .hvs simply gcode files with a different extension? I wouldn’t want to damage the machine.