You are making this far too scientific and therefor too complicated.
Using an accurate digital scale measure out .5g of powder.
Using a 60 ml glass bottle (ones often used by RC sellers) fill with 49.5ml of EVOO
Place oil in microwave and heat to a very hot a low viscous state.
Pour. 5g of powder into oil, cap, shake very vigorously for several to many minute.
It may not go into solution completely and is quite fine as a suspension. That is why the concentration is so low as to optimize soluability.
Before we start debating it "going bad"...if you use 30mg/day there is not enough time for it to go bad. If it falls out after time, reheat in a very hot water bath and proceed with vigorous shaking and heating.
This is not a pharmacy grade solution. It is simply easy, efficient, rather accurate and effective. Anything more defeats the benefit of cost savings of raw powders. If that is an issue then you may as well just by a manufactured product. Been done dozens of times quite effectively.