i would save the money on the dies........just buy them as needed. you will use them very rarely. the taps, are a different story. be selective don't just go and buy a set. buy the sizes you need.
google your local industrial supply there in AU.......you will find many names of taps. don't get hand taps........get spiral flute gun taps, plug,.. they are stronger. the hand taps are 3 and 4 flute and the webbing is thin they snap off easily. the gun taps have one flute and will take more punishment.
if the supplier has a HSS cobalt get them they will be the strongest. a TIN coat will help with stainless tapping. as far as cutting
oil, a dark sulfuric
oil is the best.....yeah you can get buy with the soap and the kero and other home brews but after two holes the tools will be dull. get the cutting
oil!!!!
regards, fred