Lets start this with the chemical properties.
Test Base is not water or solvent soluble therefore it will remain suspended when you compound it with any oil. You can make it alone and have a/an oil based solution that is fully dissolved but when mixed with other compounds it will not fully dissolve.
Test prop can be dissolved in oil and a solvent and will saturate in the mix.
Anadrol can also be saturated in a solvent however when mixed with oil it can separate if its not the only solution in the mix.
the chemical structure would define the compounding injectable therefore making only test p and anadrol the most viable mix. You will have to leave out the test base or your solution will crash and you will end up with a sludge mix and it will not stay stable.
at least this is what im told... =)