Rick Simpson/Cannabis Oil or just CBD?

I've been wrestling with this for some time now so I thought I'd ask everyone's opinion on the matter.

I've been gradually increasing my wife's dosage of CO to 300mg a day, hoping to reach the magic 1gm a day that's been anecdotally espoused on various places online.

However, going through all the old CancerCompass posts, I'm wondering if it might be better to just do pure CBD oil. What is everyone's thoughts as to cannabis oil versus just pure CBD. And if we were to do pure CBD, how much should we be taking to combat a GBM?

Both are difficult to get where I am so I'm wondering which of the two I should be focusing on acquiring.