I'll be interested to hear from PsyCro!PsyCro, I have a comment about your olive oil extraction product.
You take 400 g of fresh weed, which is roughly 100 g of dry weed, and extract it with 1 liter of olive oil.
If we make CO from 100 g of dry weed we get ca 14 g of CO.
Say the amount of goodies is still 14% from your 100 g of dry weed. So you will have 14 g in 1 liter of olive oil, which makes the final concentration to be 1,4% (14 in 1000). So in 1 g suppository there would be 14 mg (0,014 g) of cannabinoids. It is too diluted. We can not use 10 gram suppositories, they would be too big.
Or am I wrong?
I don't think you can just assume that you'll find the same components from a concentrate made using dried material in the olive oil extraction from fresh material (in other words I don't think you can directly compare the results from the two extraction methods). The drying process will lose mostly water, but it will also lose some compounds that you want to keep. This also suggests that different methods result in different compositions in the extract.
Additionally, I get the impression that PsyCro does a lot more processing than most during their extractions. Perhaps by blending the material in to the oil the difference in surface area has an effect on how much is extracted. I'm sure someone with more experience will correct me if I'm wrong...
In the end I'm still leaning toward a combination of slow cold ethanol extraction (SCET) combined with an olive oil extraction similar to this (just a slightly lower temperature) and lecithin. My hope is this would cover your bases in terms of components present in the final product, have a relatively high bioavailability, and hopefully make more efficient use of the plant material.
FYI PsyCro suggested that there's about 0.85 litres of oil after the extraction, it doesn't make a huge difference to your calculations though...