You can scale as big as will fit, but DO NOT scale Z height.

for PLA Kexcelled Bronze i used hatchbox gold and it worked perfect! i figure a bronze would as well

Print at 100% infill with a layer height of 0.08mm with a base layer of 0.16mm

Filaments Used:
PLA BambuLab Basic Black Transmission Distance: 0.6
PLA BambuLab Basic Yellow Transmission Distance: 6
PLA Kexcelled Bronze Transmission Distance: 0.8
PLA BambuLab Basic Jade White Transmission Distance: 5

Swap Instructions:
Start with Black
At layer #3 (0.32mm) swap to Yellow
At layer #5 (0.48mm) swap to Bronze
At layer #8 (0.72mm) swap to Jade White for the rest.